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Question for TN MRB Assistant Surgeon Cardiothoracic Surgery - Quiz / Questions / MCQ in English

Last Update on : October 12, 2026

Duration: 120 · Questions: 100 · Max Marks: 100

View TN MRB Assistant Surgeon (Cardiothoracic Surgery) 2026 Exam Page

To boost your performance in TN MRB Assistant Surgeon Cardiothoracic Surgery exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in TN MRB Assistant Surgeon Cardiothoracic Surgery exams.

Latest TN MRB Assistant Surgeon Cardiothoracic Surgery Exam Question (Objective Questions), MCQ in English

Subjects : Concerned Subject (Cardiothoracic Surgery)

Question Bank TN MRB Assistant Surgeon (Cardiothoracic Surgery) Exam - English

Concerned Subject (Cardiothoracic Surgery)

Q 1 :
The primary muscle responsible for inspiration is?
  1. A.External intercostal
  2. B.Diaphragm
  3. C.Sternocleidomastoid
  4. D.Internal intercostal
Q 2 :
The pleura that covers the lungs is called?
  1. A.Parietal pleura
  2. B.Visceral pleura
  3. C.Mediastinal pleura
  4. D.Diaphragmatic pleura
Q 3 :
The structure that separates the thoracic cavity from the abdominal cavity is?
  1. A.Mediastinum
  2. B.Diaphragm
  3. C.Pericardium
  4. D.Pleura
Q 4 :
The superior mediastinum does NOT contain which of the following?
  1. A.Thymus
  2. B.Aortic arch
  3. C.Heart ventricles
  4. D.Trachea
Q 5 :
Persistent left superior vena cava is an example of?
  1. A.Acquired heart disease
  2. B.Congenital anomaly
  3. C.Valvular disease
  4. D.Pulmonary hypertension
Q 6 :
The normal tidal volume in an adult is approximately?
  1. A.1000 mL
  2. B.500 mL
  3. C.2000 mL
  4. D.750 mL
Q 7 :
Which lung tumor is most commonly associated with smoking?
  1. A.Adenocarcinoma
  2. B.Small cell carcinoma
  3. C.Carcinoid tumor
  4. D.Hamartoma
Q 8 :
The first heart sound (S1) corresponds to closure of?
  1. A.Semilunar valves
  2. B.AV valves
  3. C.Pulmonary valves
  4. D.Aortic valve only
Q 9 :
The main function of type II pneumocytes is?
  1. A.Gas exchange
  2. B.Surfactant production
  3. C.Immunity
  4. D.Structural support
Q 10 :
In pulmonary function testing, the forced expiratory volume in 1 second (FEV1) is a measure of?
  1. A.Lung compliance
  2. B.Airflow obstruction
  3. C.Diffusing capacity
  4. D.Residual volume
Q 11 :
Which congenital heart defect is characterized by left-to-right shunt?
  1. A.Tetralogy of Fallot
  2. B.Ventricular septal defect
  3. C.Transposition of great arteries
  4. D.Pulmonary atresia
Q 12 :
The crura of the diaphragm attach to?
  1. A.Sternum
  2. B.Lumbar vertebrae
  3. C.Ribs 1–4
  4. D.Scapula
Q 13 :
The pulmonary artery carries?
  1. A.Oxygenated blood to lungs
  2. B.Deoxygenated blood to lungs
  3. C.Oxygenated blood to heart
  4. D.Deoxygenated blood to heart
Q 14 :
Inflammation of the visceral pleura is called?
  1. A.Pleuritis
  2. B.Pneumothorax
  3. C.Empyema
  4. D.Bronchitis
Q 15 :
The respiratory portion of the lung includes?
  1. A.Bronchi
  2. B.Bronchioles and alveoli
  3. C.Trachea
  4. D.Larynx
Q 16 :
The S2 heart sound is caused by closure of?
  1. A.AV valves
  2. B.Semilunar valves
  3. C.Pulmonary veins
  4. D.Atrial contraction
Q 17 :
Pulmonary hypertension is defined as mean pulmonary artery pressure >?
  1. A.10 mmHg
  2. B.20 mmHg
  3. C.25 mmHg
  4. D.30 mmHg
Q 18 :
A mass arising from the bronchial epithelium and secreting serotonin is called?
  1. A.Squamous cell carcinoma
  2. B.Adenocarcinoma
  3. C.Carcinoid tumor
  4. D.Small cell carcinoma
Q 19 :
Normal heart rate in adults ranges from?
  1. A.30–60/min
  2. B.60–100/min
  3. C.100–120/min
  4. D.120–150/min
Q 20 :
The “water-bottle” heart on chest X-ray is seen in?
  1. A.Pneumothorax
  2. B.Pericardial effusion
  3. C.Pulmonary embolism
  4. D.Lung carcinoma
Q 21 :
The most common site for VSD is?
  1. A.Membranous septum
  2. B.Muscular septum
  3. C.Atrial septum
  4. D.Pulmonary septum
Q 22 :
The right lung has how many lobes?
  1. A.Two
  2. B.Three
  3. C.Four
  4. D.Five
Q 23 :
Tetralogy of Fallot includes all EXCEPT?
  1. A.VSD
  2. B.Pulmonary stenosis
  3. C.Right ventricular hypertrophy
  4. D.Patent ductus arteriosus
Q 24 :
The primary mechanism of gas exchange in the alveoli is?
  1. A.Active transport
  2. B.Diffusion
  3. C.Filtration
  4. D.Osmosis
Q 25 :
The carina is located at which vertebral level?
  1. A.T2–T3
  2. B.T4–T5
  3. C.T6–T7
  4. D.T8–T9
Q 26 :
Normal pulmonary capillary wedge pressure is?
  1. A.2–6 mmHg
  2. B.6–12 mmHg
  3. C.12–18 mmHg
  4. D.18–24 mmHg
Q 27 :
Clubbing of fingers is commonly associated with?
  1. A.Bronchogenic carcinoma
  2. B.Myocardial infarction
  3. C.Aortic stenosis
  4. D.Pulmonary embolism
Q 28 :
The thymus is largest in which age group?
  1. A.Neonate
  2. B.Child
  3. C.Adult
  4. D.Elderly
Q 29 :
The bronchial arteries originate from?
  1. A.Pulmonary arteries
  2. B.Aorta
  3. C.Superior vena cava
  4. D.Pulmonary veins
Q 30 :
The normal inspiratory to expiratory ratio is?
  1. A.1:1
  2. B.1:2
  3. C.2:1
  4. D.3:2
Q 31 :
The main conduction tissue of the heart is?
  1. A.SA node
  2. B.AV node
  3. C.Bundle of His
  4. D.Purkinje fibers
Q 32 :
Which lung lobe is most commonly involved in aspiration pneumonia?
  1. A.Right upper lobe
  2. B.Right lower lobe
  3. C.Left upper lobe
  4. D.Left lower lobe
Q 33 :
The diaphragmatic hernia due to failure of fusion of the pleuroperitoneal membranes is called?
  1. A.Morgagni hernia
  2. B.Bochdalek hernia
  3. C.Hiatal hernia
  4. D.Umbilical hernia
Q 34 :
Pulmonary edema causes which type of respiratory pattern?
  1. A.Cheyne-Stokes
  2. B.Kussmaul
  3. C.Biot
  4. D.Tachypnea
Q 35 :
The SA node is located at?
  1. A.Junction of SVC and RA
  2. B.Apex of RV
  3. C.Interatrial septum
  4. D.Coronary sinus
Q 36 :
The most common primary malignant tumor of the lung is?
  1. A.Small cell carcinoma
  2. B.Adenocarcinoma
  3. C.Squamous cell carcinoma
  4. D.Large cell carcinoma
Q 37 :
The ejection fraction is normally?
  1. A.10–20%
  2. B.30–40%
  3. C.50–70%
  4. D.80–90%
Q 38 :
The mediastinum is divided into how many compartments?
  1. A.2
  2. B.3
  3. C.4
  4. D.5
Q 39 :
Pulmonary surfactant is composed mainly of?
  1. A.Carbohydrates
  2. B.Proteins
  3. C.Phospholipids
  4. D.DNA
Q 40 :
Pulmonary function test showing reduced FVC but normal FEV1/FVC ratio indicates?
  1. A.Obstructive lung disease
  2. B.Restrictive lung disease
  3. C.Diffusion defect
  4. D.Pulmonary hypertension
Q 41 :
The apex of the heart points to which intercostal space?
  1. A.3rd
  2. B.4th
  3. C.5th
  4. D.6th
Q 42 :
The pulmonary veins carry?
  1. A.Oxygenated blood to left atrium
  2. B.Deoxygenated blood to right atrium
  3. C.Oxygenated blood to right atrium
  4. D.Deoxygenated blood to left atrium
Q 43 :
The ductus arteriosus normally closes by?
  1. A.Birth
  2. B.1–2 days
  3. C.1–2 weeks
  4. D.1–2 months
Q 44 :
The P wave in ECG represents?
  1. A.Ventricular depolarization
  2. B.Atrial depolarization
  3. C.Ventricular repolarization
  4. D.AV node conduction
Q 45 :
The main cause of restrictive lung disease is?
  1. A.Airway obstruction
  2. B.Parenchymal fibrosis
  3. C.Pulmonary embolism
  4. D.Pneumothorax
Q 46 :
The “boot-shaped” heart is seen in?
  1. A.VSD
  2. B.Tetralogy of Fallot
  3. C.Transposition of great arteries
  4. D.Atrial septal defect
Q 47 :
Pulmonary artery wedge pressure estimates?
  1. A.Left atrial pressure
  2. B.Right atrial pressure
  3. C.Pulmonary venous pressure
  4. D.Pulmonary arterial pressure
Q 48 :
Hypertrophic obstructive cardiomyopathy primarily affects which part of the heart?
  1. A.Left atrium
  2. B.Right ventricle
  3. C.Left ventricle
  4. D.Right atrium
Q 49 :
The most common site for lung abscess is?
  1. A.Right upper lobe
  2. B.Right middle lobe
  3. C.Right lower lobe
  4. D.Left upper lobe
Q 50 :
The fibrous pericardium is attached to which structure?
  1. A.Lungs
  2. B.Diaphragm
  3. C.Trachea
  4. D.Esophagus

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