Which muscle is primarily responsible for diaphragmatic movement during quiet respiration?
A
External intercostal muscles
B
Internal intercostal muscles
C
Diaphragm
D
Scalene muscles
Question 2Single Answer
The nerve supply to the diaphragm is provided by which nerve?
A
Vagus nerve
B
Phrenic nerve
C
Intercostal nerves
D
Accessory nerve
Question 3Single Answer
Which structure separates the right and left pleural cavities in the mediastinum?
A
Pericardium
B
Sternum
C
Mediastinal pleura
D
Vertebral column
Question 4Single Answer
Which of the following is NOT a muscle of respiration?
A
Pectoralis major
B
External intercostals
C
Diaphragm
D
Sternocleidomastoid
Question 5Single Answer
The sinoatrial (S) node, the heart’s primary pacemaker, is located in which chamber?
A
Left atrium
B
Right atrium
C
Left ventricle
D
Right ventricle
Question 6Single Answer
Which artery supplies the majority of the left ventricle and interventricular septum?
A
Right coronary artery
B
Posterior descending artery
C
Circumflex artery
D
Left anterior descending artery
Question 7Single Answer
The autonomic innervation of the heart includes which nerve for parasympathetic control?
A
Phrenic nerve
B
Vagus nerve
C
Sympathetic chain
D
Splanchnic nerve
Question 8Single Answer
In fetal circulation, which structure shunts blood from the pulmonary artery to the aorta?
A
Foramen ovale
B
Ductus venosus
C
Ductus arteriosus
D
Umbilical vein
Question 9Single Answer
The coronary sinus drains venous blood from the heart into which structure?
A
Superior vena cava
B
Right atrium
C
Left atrium
D
Pulmonary vein
Question 10Single Answer
Which cranial nerve is responsible for sensory innervation of the face and motor innervation of muscles of mastication?
A
Facial nerve (VII)
B
Trigeminal nerve (V)
C
Glossopharyngeal nerve (IX)
D
Vagus nerve (X)
Question 11Single Answer
The epidural space is located between which two structures?
A
Dura mater and arachnoid mater
B
Arachnoid mater and pia mater
C
Dura mater and vertebral periosteum
D
Pia mater and spinal cord
Question 12Single Answer
Which autonomic nervous system component increases heart rate during anesthesia?
A
Parasympathetic (vagus nerve)
B
Sympathetic
C
Somatic nervous system
D
Enteric nervous system
Question 13Single Answer
Which structure is at risk of injury during a central venous catheter insertion via the internal jugular vein?
A
Phrenic nerve
B
Vagus nerve
C
Carotid artery
D
Brachial plexus
Question 14Single Answer
The recurrent laryngeal nerve, a branch of the vagus, innervates which structure?
A
Trachea
B
Larynx
C
Pharynx
D
Esophagus
Question 15Single Answer
Which lung segment is most dependent and prone to atelectasis under general anesthesia?
A
Right upper lobe
B
Left upper lobe
C
Right lower lobe
D
Left middle lobe
Question 16Single Answer
Which structure anchors the heart to the diaphragm and is relevant during pericardiocentesis?
A
Pericardial ligament
B
Central tendon
C
Phrenopericardial ligament
D
Coronary ligament
Question 17Single Answer
Which structure forms the boundary between the upper and lower airways?
A
Epiglottis
B
Vocal cords
C
Cricoid cartilage
D
Tracheal rings
Question 18Single Answer
The parietal pleura is innervated by which nerve, causing referred pain during pleural irritation?
A
Vagus nerve
B
Phrenic nerve
C
Intercostal nerves
D
Recurrent laryngeal nerve
Question 19Single Answer
Which bronchus is more vertical and prone to foreign body aspiration?
A
Right main bronchus
B
Left main bronchus
C
Right upper lobe bronchus
D
Left lower lobe bronchus
Question 20Single Answer
The scalene muscles assist in respiration by elevating which structure?
A
Clavicle
B
First two ribs
C
Sternum
D
Diaphragm
Question 21Single Answer
The mediastinum contains which structure critical for airway assessment in anesthesia?
A
Thymus gland
B
Trachea
C
Azygos vein
D
Thoracic duct
Question 22Single Answer
The atrioventricular (AV) node is located in which part of the heart?
A
Interatrial septum
B
Interventricular septum
C
Right atrium near the coronary sinus
D
Left ventricle apex
Question 23Single Answer
Which vessel supplies the posterior one-third of the interventricular septum?
A
Left anterior descending artery
B
Posterior descending artery
C
Circumflex artery
D
Marginal artery
Question 24Single Answer
In fetal circulation, the foramen ovale allows blood to flow between which structures?
A
Right ventricle to left ventricle
B
Right atrium to left atrium
C
Pulmonary artery to aorta
D
Left atrium to left ventricle
Question 25Single Answer
The aortic arch is located in which mediastinal compartment?
A
Superior mediastinum
B
Anterior mediastinum
C
Middle mediastinum
D
Posterior mediastinum
Question 26Single Answer
Which cranial nerve is responsible for innervation of the tongue’s motor function?
A
Trigeminal nerve (V)
B
Facial nerve (VII)
C
Hypoglossal nerve (XII)
D
Glossopharyngeal nerve (IX)
Question 27Single Answer
Which structure is compressed in a high spinal block causing respiratory compromise?
A
Phrenic nerve
B
Intercostal nerves
C
Vagus nerve
D
Cervical spinal cord
Question 28Single Answer
Which structure is most likely to be injured during a tracheostomy procedure?
A
Thyroid gland
B
Carotid artery
C
Phrenic nerve
D
Vagus nerve
Question 29Single Answer
The bronchial arteries, supplying the lung parenchyma, typically arise from which vessel?
A
Pulmonary artery
B
Thoracic aorta
C
Subclavian artery
D
Intercostal arteries
Question 30Single Answer
Which nerve is blocked to provide anesthesia to the anterior thigh?
A
Sciatic nerve
B
Femoral nerve
C
Obturator nerve
D
Saphenous nerve
Question 31Single Answer
The pulmonary veins drain oxygenated blood into which cardiac chamber?
A
Right atrium
B
Right ventricle
C
Left atrium
D
Left ventricle
Question 32Single Answer
Which cranial nerve is tested by assessing the gag reflex in airway evaluation?
A
Trigeminal nerve (V)
B
Facial nerve (VII)
C
Glossopharyngeal nerve (IX)
D
Hypoglossal nerve (XII)
Question 33Single Answer
Which cartilage forms the anterior wall of the larynx?
A
Cricoid cartilage
B
Thyroid cartilage
C
Arytenoid cartilage
D
Epiglottis
Question 34Single Answer
The visceral pleura is supplied by which nerve?
A
Phrenic nerve
B
Vagus nerve
C
Intercostal nerves
D
No nerve supply
Question 35Single Answer
Which muscle elevates the larynx during swallowing?
A
Sternothyroid
B
Thyrohyoid
C
Omohyoid
D
Sternocleidomastoid
Question 36Single Answer
The trachealis muscle is located in which part of the trachea?
A
Anterior wall
B
Posterior wall
C
Lateral wall
D
Entire circumference
Question 37Single Answer
Which structure is immediately posterior to the trachea?
A
Esophagus
B
Aorta
C
Superior vena cava
D
Thoracic duct
Question 38Single Answer
The apex of the lung extends to which anatomical level?
A
First rib
B
Clavicle
C
Vertebra
D
Second rib
Question 39Single Answer
Which nerve innervates the cricothyroid muscle?
A
External laryngeal nerve
B
Recurrent laryngeal nerve
C
Internal laryngeal nerve
D
Vagus nerve
Question 40Single Answer
The bronchopulmonary segments are separated by which tissue?
A
Pleura
B
Connective tissue
C
Cartilage
D
Muscle
Question 41Single Answer
The costodiaphragmatic recess is located between which structures?
A
Diaphragm and ribs
B
Diaphragm and heart
C
Ribs and lungs
D
Heart and lungs
Question 42Single Answer
Which structure is palpated during a cricothyrotomy?
A
Thyroid cartilage
B
Cricoid cartilage
C
Hyoid bone
D
Sternum
Question 43Single Answer
The left main bronchus is approximately how long compared to the right?
A
Shorter
B
Equal
C
Longer
D
Absent
Question 44Single Answer
Which muscle is an accessory muscle of inspiration?
A
Internal intercostals
B
External intercostals
C
Transversus thoracis
D
Diaphragmatic crura
Question 45Single Answer
The pleural cavity contains which type of fluid?
A
Cerebrospinal fluid
B
Synovial fluid
C
Serous fluid
D
Lymphatic fluid
Question 46Single Answer
The carina is sensitive to which type of stimulation during intubation?
A
Thermal
B
Mechanical
C
Chemical
D
Electrical
Question 47Single Answer
Which structure divides the superior and inferior mediastinum?
A
Sternum
B
Diaphragm
C
Sternal angle
D
Clavicle
Question 48Single Answer
The right upper lobe bronchus branches into how many segmental bronchi?
A
Two
B
Three
C
Four
D
Five
Question 49Single Answer
Which nerve provides sensory innervation to the trachea?
A
Phrenic nerve
B
Sympathetic trunk
C
Intercostal nerves
D
Vagus nerve
Question 50Single Answer
The angle of Louis corresponds to which rib level?
A
First rib
B
Second rib
C
Third rib
D
Fourth rib
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Concerned Subject (Anesthesiology)
Question 51Single Answer
The bundle of His is located in which cardiac structure?
A
Interatrial septum
B
Interventricular septum
C
Right atrium
D
Left ventricle
Question 52Single Answer
The right coronary artery typically supplies which heart structure?
A
Left ventricle
B
Right atrium
C
Left atrium
D
Apex of the heart
Question 53Single Answer
The ligamentum arteriosum is a remnant of which fetal structure?
A
Ductus venosus
B
Foramen ovale
C
Ductus arteriosus
D
Umbilical artery
Question 54Single Answer
The left coronary artery divides into which two main branches?
A
Circumflex and marginal
B
Left anterior descending and circumflex
C
Posterior descending and marginal
D
Left anterior descending and posterior descending
Question 55Single Answer
The cardiac plexus receives input from which nerve?
A
Phrenic nerve
B
Vagus nerve
C
Intercostal nerve
D
Splanchnic nerve
Question 56Single Answer
The aortic root is located in which mediastinal compartment?
A
Anterior mediastinum
B
Middle mediastinum
C
Posterior mediastinum
D
Superior mediastinum
Question 57Single Answer
Which vein drains the anterior surface of the heart?
A
Great cardiac vein
B
Small cardiac vein
C
Middle cardiac vein
D
Coronary sinus
Question 58Single Answer
The moderator band is found in which heart chamber?
A
Left atrium
B
Right atrium
C
Left ventricle
D
Right ventricle
Question 59Single Answer
The first heart sound (S) is caused by the closure of which valves?
A
Aortic and pulmonary
B
Mitral and tricuspid
C
Mitral and aortic
D
Tricuspid and pulmonary
Question 60Single Answer
Which artery supplies the SA node in most individuals?
A
Left anterior descending
B
Right coronary artery
C
Circumflex artery
D
Posterior descending artery
Question 61Single Answer
The ductus venosus in fetal circulation connects which structures?
A
Umbilical vein to inferior vena cava
B
Pulmonary artery to aorta
C
Right atrium to left atrium
D
Umbilical artery to placenta
Question 62Single Answer
The papillary muscles are attached to which heart valves?
A
Aortic and pulmonary
B
Mitral and tricuspid
C
Aortic and mitral
D
Tricuspid and pulmonary
Question 63Single Answer
The pericardium is anchored to which structure inferiorly?
A
Sternum
B
Diaphragm
C
Ribs
D
Vertebral column
Question 64Single Answer
Which nerve mediates the baroreceptor reflex in the aortic arch?
A
Vagus nerve
B
Glossopharyngeal nerve
C
Phrenic nerve
D
Hypoglossal nerve
Question 65Single Answer
The left ventricle primarily ejects blood into which vessel?
A
Pulmonary artery
B
Aorta
C
Superior vena cava
D
Coronary sinus
Question 66Single Answer
The right atrium receives blood from which vessel?
A
Pulmonary vein
B
Superior vena cava
C
Aorta
D
Pulmonary artery
Question 67Single Answer
The coronary arteries arise from which part of the aorta?
A
Ascending aorta
B
Aortic arch
C
Descending aorta
D
Abdominal aorta
Question 68Single Answer
The chordae tendineae are attached to which cardiac structure?
A
Atrial wall
B
Ventricular wall
C
Papillary muscles
D
Interventricular septum
Question 69Single Answer
The pulmonary trunk is located in which mediastinal compartment?
A
Anterior mediastinum
B
Middle mediastinum
C
Posterior mediastinum
D
Superior mediastinum
Question 70Single Answer
The autonomic nervous system regulates heart rate via which ganglia?
A
Stellate ganglia
B
Celiac ganglia
C
Superior cervical ganglia
D
Lumbar ganglia
Question 71Single Answer
The vagus nerve exits the skull through which foramen?
A
Foramen ovale
B
Jugular foramen
C
Foramen magnum
D
Hypoglossal canal
Question 72Single Answer
Which nerve is blocked for anesthesia of the hand?
A
Median nerve
B
Femoral nerve
C
Sciatic nerve
D
Obturator nerve
Question 73Single Answer
Which cranial nerve innervates the trapezius muscle?
A
Vagus nerve (X)
B
Accessory nerve (XI)
C
Hypoglossal nerve (XII)
D
Facial nerve (VII)
Question 74Single Answer
Which structure is located in the subarachnoid space?
A
Epidural fat
B
Cerebrospinal fluid
C
Dura mater
D
Ligamentum flavum
Question 75Single Answer
The oculomotor nerve (III) controls which eye muscle?
A
Lateral rectus
B
Superior oblique
C
Medial rectus
D
Superior rectus
Question 76Single Answer
The saphenous nerve is a branch of which nerve?
A
Sciatic nerve
B
Femoral nerve
C
Obturator nerve
D
Tibial nerve
Question 77Single Answer
The sympathetic trunk is located in which anatomical region?
A
Paravertebral
B
Prevertebral
C
Subarachnoid
D
Epidural
Question 78Single Answer
Which nerve innervates the deltoid muscle?
A
Radial nerve
B
Axillary nerve
C
Median nerve
D
Ulnar nerve
Question 79Single Answer
Which cranial nerve is responsible for taste on the anterior two-thirds of the tongue?
A
Glossopharyngeal nerve (IX)
B
Facial nerve (VII)
C
Vagus nerve (X)
D
Trigeminal nerve (V)
Question 80Single Answer
The tibial nerve is a branch of which nerve?
A
Femoral nerve
B
Obturator nerve
C
Sciatic nerve
D
Common peroneal nerve
Question 81Single Answer
The meninges consist of which layers, from outermost to innermost?
A
Pia mater, arachnoid mater, dura mater
B
Dura mater, arachnoid mater, pia mater
C
Arachnoid mater, dura mater, pia mater
D
Pia mater, dura mater, arachnoid mater
Question 82Single Answer
The radial nerve arises from which brachial plexus cord?
A
Lateral cord
B
Medial cord
C
Posterior cord
D
Anterior cord
Question 83Single Answer
Which nerve is responsible for innervation of the diaphragm?
A
Vagus nerve
B
Phrenic nerve
C
Intercostal nerve
D
Accessory nerve
Question 84Single Answer
The abducens nerve (VI) innervates which eye muscle?
A
Medial rectus
B
Superior oblique
C
Lateral rectus
D
Inferior rectus
Question 85Single Answer
Which nerve is blocked for anesthesia of the posterior thigh?
A
Femoral nerve
B
Sciatic nerve
C
Obturator nerve
D
Saphenous nerve
Question 86Single Answer
The superior vena cava is located in which mediastinal compartment?
A
Anterior mediastinum
B
Middle mediastinum
C
Superior mediastinum
D
Posterior mediastinum
Question 87Single Answer
Which muscle is used as a landmark for interscalene brachial plexus block?
A
Sternocleidomastoid
B
Trapezius
C
Scalene anterior
D
Omohyoid
Question 88Single Answer
The left recurrent laryngeal nerve loops around which structure?
A
Aortic arch
B
Pulmonary artery
C
Subclavian artery
D
Superior vena cava
Question 89Single Answer
Which structure is at risk during a subclavian central venous catheter insertion?
A
Brachial plexus
B
Phrenic nerve
C
Vagus nerve
D
Recurrent laryngeal nerve
Question 90Single Answer
The right ventricle pumps blood into which vessel?
A
Aorta
B
Pulmonary artery
C
Coronary sinus
D
Superior vena cava
Question 91Single Answer
Which nerve provides sensory innervation to the larynx above the vocal cords?
A
Recurrent laryngeal nerve
B
External laryngeal nerve
C
Internal laryngeal nerve
D
Vagus nerve
Question 92Single Answer
The azygos vein drains into which structure?
A
Superior vena cava
B
Inferior vena cava
C
Coronary sinus
D
Pulmonary vein
Question 93Single Answer
The pulmonary artery is located anterior to which structure?
A
Aorta
B
Trachea
C
Esophagus
D
Bronchi
Question 94Single Answer
The trochlear nerve (IV) innervates which eye muscle?
A
Superior rectus
B
Inferior rectus
C
Superior oblique
D
Lateral rectus
Question 95Single Answer
The thoracic duct drains into which venous structure?
A
Subclavian vein
B
Internal jugular vein
C
Superior vena cava
D
Azygos vein
Question 96Single Answer
Which nerve is blocked for anesthesia of the medial forearm?
A
Radial nerve
B
Median nerve
C
Ulnar nerve
D
Musculocutaneous nerve
Question 97Single Answer
The mitral valve is located between which two chambers?
A
Left atrium and left ventricle
B
Right atrium and right ventricle
C
Left ventricle and aorta
D
Right ventricle and pulmonary artery
Question 98Single Answer
The stellate ganglion block affects which part of the body?
A
Lower limb
B
Upper limb and face
C
Abdomen
D
Pelvis
Question 99Single Answer
The right main bronchus divides into how many lobar bronchi?
A
One
B
Two
C
Three
D
Four
Question 100Single Answer
Which nerve innervates the genioglossus muscle?
A
Facial nerve (VII)
B
Hypoglossal nerve (XII)
C
Glossopharyngeal nerve (IX)
D
Vagus nerve (X)
Question 101Single Answer
The circumflex artery supplies which part of the heart?
A
Left atrium
B
Right ventricle
C
Interventricular septum
D
Apex of the heart
Question 102Single Answer
The spinal accessory nerve (XI) exits the skull through which foramen?
A
Foramen ovale
B
Jugular foramen
C
Foramen magnum
D
Hypoglossal canal
Question 103Single Answer
The bronchial veins drain into which system?
A
Pulmonary veins
B
Superior vena cava
C
Coronary sinus
D
Azygos system
Question 104Single Answer
Which nerve is blocked for anesthesia of the lateral thigh?
A
Femoral nerve
B
Lateral femoral cutaneous nerve
C
Obturator nerve
D
Sciatic nerve
Question 105Single Answer
The tricuspid valve is located between which two chambers?
A
Right atrium and right ventricle
B
Left atrium and left ventricle
C
Right ventricle and pulmonary artery
D
Left ventricle and aorta
Question 106Single Answer
The left lung has how many lobes?
A
One
B
Two
C
Three
D
Four
Question 107Single Answer
The cardiac conduction system includes which structure?
A
Purkinje fibers
B
Coronary sinus
C
Papillary muscles
D
Chordae tendineae
Question 108Single Answer
Which nerve provides sensory innervation to the external ear?
A
Trigeminal nerve (V)
B
Facial nerve (VII)
C
Vagus nerve (X)
D
Glossopharyngeal nerve (IX)
Question 109Single Answer
The ligamentum flavum is located in which spinal region?
A
Epidural space
B
Subarachnoid space
C
Intervertebral space
D
Subdural space
Question 110Single Answer
The right coronary artery supplies which node in most individuals?
A
AV node
B
SA node
C
Bundle of His
D
Purkinje fibers
Question 111Single Answer
The pulmonary ligament is an extension of which structure?
A
Pleura
B
Diaphragm
C
Pericardium
D
Mediastinum
Question 112Single Answer
The musculocutaneous nerve innervates which muscle?
A
Triceps brachii
B
Biceps brachii
C
Deltoid
D
Trapezius
Question 113Single Answer
The aortic valve has how many cusps?
A
Two
B
Four
C
Three
D
One
Question 114Single Answer
Which nerve is blocked for anesthesia of the foot?
A
Femoral nerve
B
Sciatic nerve
C
Obturator nerve
D
Lateral femoral cutaneous nerve
Question 115Single Answer
The mediastinal pleura is adjacent to which structure?
A
Heart
B
Lungs
C
Diaphragm
D
Sternum
Question 116Single Answer
The facial nerve (VII) exits the skull through which foramen?
A
Stylomastoid foramen
B
Jugular foramen
C
Foramen ovale
D
Hypoglossal canal
Question 117Single Answer
The middle cardiac vein drains which part of the heart?
A
Left ventricle
B
Right ventricle
C
Interventricular septum
D
Left atrium
Question 118Single Answer
The common peroneal nerve is a branch of which nerve?
A
Femoral nerve
B
Sciatic nerve
C
Obturator nerve
D
Tibial nerve
Question 119Single Answer
The left lower lobe bronchus divides into how many segmental bronchi?
A
Three
B
Four
C
Five
D
Six
Question 120Single Answer
The vagus nerve provides parasympathetic innervation to which organ?
A
Liver
B
Heart
C
Pancreas
D
Spleen
Question 121Single Answer
The annulus fibrosus surrounds which heart valve?
A
Aortic valve
B
Pulmonary valve
C
Mitral valve
D
Tricuspid valve
Question 122Single Answer
Which nerve is blocked for anesthesia of the medial thigh?
A
Femoral nerve
B
Obturator nerve
C
Sciatic nerve
D
Saphenous nerve
Question 123Single Answer
The right upper lobe is supplied by which bronchus?
A
Right main bronchus
B
Right upper lobe bronchus
C
Right middle lobe bronchus
D
Right lower lobe bronchus
Question 124Single Answer
The optic nerve (II) exits the skull through which structure?
A
Optic canal
B
Foramen ovale
C
Jugular foramen
D
Foramen magnum
Question 125Single Answer
The small cardiac vein drains into which structure?
A
Coronary sinus
B
Superior vena cava
C
Pulmonary vein
D
Azygos vein
Question 126Single Answer
The ulnar nerve arises from which brachial plexus cord?
A
Lateral cord
B
Medial cord
C
Posterior cord
D
Anterior cord
Question 127Single Answer
The costomediastinal recess is located between which structures?
A
Sternum and mediastinum
B
Diaphragm and ribs
C
Heart and lungs
D
Ribs and pleura
Question 128Single Answer
Which nerve innervates the levator palpebrae superioris muscle?
A
Oculomotor nerve (III)
B
Trochlear nerve (IV)
C
Abducens nerve (VI)
D
Facial nerve (VII)
Question 129Single Answer
The inferior vena cava enters the heart at which chamber?
A
Right atrium
B
Right ventricle
C
Left atrium
D
Left ventricle
Question 130Single Answer
The left main bronchus is separated from the aorta by which structure?
A
Esophagus
B
Pulmonary artery
C
Trachea
D
Azygos vein
Question 131Single Answer
The median nerve innervates which muscle?
A
Triceps brachii
B
Flexor carpi radialis
C
Deltoid
D
Trapezius
Question 132Single Answer
The pulmonary valve is located between which structures?
A
Right ventricle and pulmonary artery
B
Left ventricle and aorta
C
Right atrium and right ventricle
D
Left atrium and left ventricle
Question 133Single Answer
The right middle lobe bronchus divides into how many segmental bronchi?
A
One
B
Two
C
Three
D
Four
Question 134Single Answer
Which nerve provides sensory innervation to the soft palate?
A
Trigeminal nerve (V)
B
Facial nerve (VII)
C
Glossopharyngeal nerve (IX)
D
Vagus nerve (X)
Question 135Single Answer
The marginal artery is a branch of which coronary artery?
A
Right coronary artery
B
Left anterior descending artery
C
Circumflex artery
D
Posterior descending artery
Question 136Single Answer
The left ventricle is separated from the right ventricle by which structure?
A
Interatrial septum
B
Interventricular septum
C
Coronary sinus
D
Pericardium
Question 137Single Answer
The sural nerve is a branch of which nerve?
A
Tibial nerve
B
Common peroneal nerve
C
Femoral nerve
D
Sciatic nerve
Question 138Single Answer
The left upper lobe bronchus divides into how many segmental bronchi?
A
Two
B
Three
C
Four
D
Five
Question 139Single Answer
The hypoglossal nerve (XII) exits the skull through which structure?
A
Jugular foramen
B
Hypoglossal canal
C
Foramen ovale
D
Foramen magnum
Question 140Single Answer
The posterior descending artery is a branch of which artery in most individuals?
A
Left anterior descending artery
B
Right coronary artery
C
Circumflex artery
D
Marginal artery
Question 141Single Answer
The ansa cervicalis innervates which muscles?
A
Infrahyoid muscles
B
Suprahyoid muscles
C
Pharyngeal muscles
D
Laryngeal muscles
Question 142Single Answer
The visceral pericardium is also known as which layer?
A
Epicardium
B
Myocardium
C
Endocardium
D
Parietal pericardium
Question 143Single Answer
The right lower lobe bronchus divides into how many segmental bronchi?
A
Three
B
Four
C
Five
D
Six
Question 144Single Answer
The vestibulocochlear nerve (VIII) is responsible for which function?
A
Vision
B
Hearing and balance
C
Taste
D
Facial expression
Question 145Single Answer
The great cardiac vein runs alongside which artery?
A
Left anterior descending artery
B
Right coronary artery
C
Circumflex artery
D
Posterior descending artery
Question 146Single Answer
The ligamentum venosum is a remnant of which fetal structure?
A
Ductus arteriosus
B
Ductus venosus
C
Foramen ovale
D
Umbilical artery
Question 147Single Answer
The axillary nerve arises from which brachial plexus cord?
A
Lateral cord
B
Medial cord
C
Posterior cord
D
Anterior cord
Question 148Single Answer
The left atrial appendage is located in which heart chamber?
A
Left atrium
B
Right atrium
C
Left ventricle
D
Right ventricle
Question 149Single Answer
The right main bronchus is how wide compared to the left?
A
Narrower
B
Equal
C
Wider
D
Absent
Question 150Single Answer
The trigeminal nerve (V) exits the skull through which foramen?
A
Foramen ovale
B
Jugular foramen
C
Foramen magnum
D
Optic canal
Question 151Single Answer
The coronary sinus is located in which groove of the heart?
A
Interventricular groove
B
Atrioventricular groove
C
Interatrial groove
D
Aortic groove
Question 152Single Answer
The lateral pectoral nerve innervates which muscle?
A
Pectoralis major
B
Pectoralis minor
C
Serratus anterior
D
Subclavius
Question 153Single Answer
The left pulmonary artery is located posterior to which structure?
A
Aorta
B
Trachea
C
Left main bronchus
D
Esophagus
Question 154Single Answer
The accessory nerve (XI) innervates which muscle besides trapezius?
A
Sternocleidomastoid
B
Platysma
C
Omohyoid
D
Thyrohyoid
Question 155Single Answer
The fossa ovalis is a remnant of which fetal structure?
A
Ductus arteriosus
B
Foramen ovale
C
Ductus venosus
D
Umbilical vein
Question 156Single Answer
The right atrial appendage is located in which heart chamber?
A
Right atrium
B
Right ventricle
C
Left atrium
D
Left ventricle
Question 157Single Answer
The suprascapular nerve innervates which muscle?
A
Deltoid
B
Supraspinatus
C
Trapezius
D
Pectoralis major
Question 158Single Answer
The right pulmonary vein drains into which chamber?
A
Right atrium
B
Right ventricle
C
Left atrium
D
Left ventricle
Question 159Single Answer
The long thoracic nerve innervates which muscle?
A
Serratus anterior
B
Pectoralis major
C
Latissimus dorsi
D
Subscapularis
Question 160Single Answer
The left main bronchus crosses which structure anteriorly?
A
Aorta
B
Esophagus
C
Pulmonary artery
D
Azygos vein
Question 161Single Answer
The oculomotor nerve (III) exits the skull through which foramen?
A
Superior orbital fissure
B
Foramen ovale
C
Jugular foramen
D
Optic canal
Question 162Single Answer
The small saphenous vein drains into which vein?
A
Great saphenous vein
B
Popliteal vein
C
Femoral vein
D
Tibial vein
Question 163Single Answer
The dorsal scapular nerve innervates which muscle?
A
Rhomboid major
B
Trapezius
C
Deltoid
D
Pectoralis minor
Question 164Single Answer
The left coronary artery arises from which aortic sinus?
A
Right coronary sinus
B
Left coronary sinus
C
Posterior coronary sinus
D
Non-coronary sinus
Question 165Single Answer
The right ventricle forms which border of the heart on a chest X-ray?
A
Left border
B
Right border
C
Superior border
D
Inferior border
Question 166Single Answer
The trochlear nerve (IV) exits the skull through which foramen?
A
Superior orbital fissure
B
Foramen ovale
C
Jugular foramen
D
Optic canal
Question 167Single Answer
The bronchial arteries supply which part of the lung?
A
Alveoli
B
Bronchi
C
Pleura
D
Pulmonary veins
Question 168Single Answer
The thoracodorsal nerve innervates which muscle?
A
Latissimus dorsi
B
Pectoralis major
C
Serratus anterior
D
Trapezius
Question 169Single Answer
The left ventricle forms which border of the heart on a chest X-ray?
A
Right border
B
Left border
C
Superior border
D
Inferior border
Question 170Single Answer
The abducens nerve (VI) exits the skull through which foramen?
A
Superior orbital fissure
B
Foramen ovale
C
Jugular foramen
D
Optic canal
Question 171Single Answer
The right coronary artery arises from which aortic sinus?
A
Right coronary sinus
B
Left coronary sinus
C
Posterior coronary sinus
D
Non-coronary sinus
Question 172Single Answer
The medial pectoral nerve innervates which muscle?
A
Pectoralis major
B
Pectoralis minor
C
Serratus anterior
D
Subclavius
Question 173Single Answer
The left lower lobe is supplied by which bronchus?
A
Left main bronchus
B
Left upper lobe bronchus
C
Left lower lobe bronchus
D
Right main bronchus
Question 174Single Answer
The vagus nerve provides sensory innervation to which part of the ear?
A
External auditory canal
B
Tympanic membrane
C
Auricle
D
Middle ear
Question 175Single Answer
The vertebral column consists of how many vertebrae?
A
26
B
33
C
30
D
28
Question 176Single Answer
Which structure is palpated to locate the epidural space during anesthesia?
A
Spinous process
B
Transverse process
C
Lamina
D
Pedicle
Question 177Single Answer
The interscalene block primarily anesthetizes which part of the body?
A
Lower limb
B
Upper limb
C
Abdomen
D
Pelvis
Question 178Single Answer
The sacroiliac joint is classified as which type of joint?
A
Synovial
B
Cartilaginous
C
Fibrous
D
Ball-and-socket
Question 179Single Answer
Which nerve is blocked for anesthesia of the anterior thigh?
A
Sciatic nerve
B
Femoral nerve
C
Obturator nerve
D
Saphenous nerve
Question 180Single Answer
The ligamentum flavum is located between which vertebral structures?
A
Spinous processes
B
Laminae
C
Transverse processes
D
Vertebral bodies
Question 181Single Answer
The axillary nerve innervates which muscle?
A
Deltoid
B
Biceps brachii
C
Triceps brachii
D
Pectoralis major
Question 182Single Answer
Which bone is a landmark for the supraclavicular brachial plexus block?
A
Scapula
B
Clavicle
C
Humerus
D
Sternum
Question 183Single Answer
The sciatic nerve exits the pelvis through which foramen?
A
Obturator foramen
B
Greater sciatic foramen
C
Lesser sciatic foramen
D
Sacral foramen
Question 184Single Answer
The epidural space is located between which structures?
A
Dura mater and arachnoid mater
B
Dura mater and vertebral periosteum
C
Arachnoid mater and pia mater
D
Pia mater and spinal cord
Question 185Single Answer
The medial collateral ligament stabilizes which joint?
A
Hip
B
Knee
C
Ankle
D
Elbow
Question 186Single Answer
The obturator nerve innervates which muscle?
A
Quadriceps femoris
B
Adductor longus
C
Gastrocnemius
D
Hamstrings
Question 187Single Answer
The popliteal fossa is a landmark for blocking which nerve?
A
Femoral nerve
B
Sciatic nerve
C
Obturator nerve
D
Saphenous nerve
Question 188Single Answer
Which artery primarily supplies the thyroid gland?
A
Internal carotid artery
B
Superior thyroid artery
C
Subclavian artery
D
Vertebral artery
Question 189Single Answer
The parathyroid glands are typically located posterior to which structure?
A
Trachea
B
Pharynx
C
Esophagus
D
Thyroid gland
Question 190Single Answer
Which vein drains the thyroid gland?
A
Internal jugular vein
B
Superior thyroid vein
C
Subclavian vein
D
Azygos vein
Question 191Single Answer
The pancreas is located in which abdominal region?
A
Epigastric and left hypochondriac
B
Umbilical and right iliac
C
Hypogastric and left iliac
D
Right hypochondriac and lumbar
Question 192Single Answer
The adrenal medulla is derived from which embryonic layer?
A
Ectoderm
B
Mesoderm
C
Endoderm
D
Neural crest
Question 193Single Answer
Which hormone is secreted by the thyroid follicular cells?
A
Calcitonin
B
Parathormone
C
Cortisol
D
Insulin
Question 194Single Answer
The inferior thyroid artery is a branch of which artery?
A
External carotid artery
B
Thyrocervical trunk
C
Subclavian artery
D
Internal carotid artery
Question 195Single Answer
The pancreas has which type of glandular function?
A
Exocrine only
B
Endocrine only
C
Both exocrine and endocrine
D
Neither exocrine nor endocrine
Question 196Single Answer
The parathyroid glands are supplied by which artery?
A
Superior thyroid artery
B
Inferior thyroid artery
C
External carotid artery
D
Facial artery
Question 197Single Answer
The adrenal cortex is divided into how many zones?
A
Two
B
Three
C
Four
D
Five
Question 198Single Answer
The tail of the pancreas is in contact with which organ?
A
Liver
B
Spleen
C
Stomach
D
Kidney
Question 199Single Answer
Which nerve innervates the thyroid gland?
A
Vagus nerve
B
Recurrent laryngeal nerve
C
Phrenic nerve
D
Glossopharyngeal nerve
Question 200Single Answer
The adrenal glands are located in which anatomical space?
