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Objective Questions

Latest BTSC ECG Technician Exam Question (Objective Questions), MCQ in English

Subjects : ECG Technician

Question Bank BTSC ECG Technician Exam - English
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ECG Technician

Question 1Single Answer
Which chamber of the heart receives deoxygenated blood from the systemic circulation?
  1. A
    Left atrium
  2. B
    Left ventricle
  3. C
    Right atrium
  4. D
    Right ventricle
Question 2Single Answer
The aorta originates from which chamber of the heart?
  1. A
    Right atrium
  2. B
    Left atrium
  3. C
    Right ventricle
  4. D
    Left ventricle
Question 3Single Answer
Which blood vessels carry oxygenated blood to the lungs?
  1. A
    Pulmonary veins
  2. B
    Pulmonary arteries
  3. C
    Superior vena cava
  4. D
    Inferior vena cava
Question 4Single Answer
The sinoatrial (SA) node is located in which part of the heart?
  1. A
    Right ventricle
  2. B
    Left ventricle
  3. C
    Right atrium
  4. D
    Left atrium
Question 5Single Answer
Which layer of the heart wall is responsible for its contractile function?
  1. A
    Epicardium
  2. B
    Myocardium
  3. C
    Endocardium
  4. D
    Pericardium
Question 6Single Answer
The tricuspid valve has how many leaflets?
  1. A
    Two
  2. B
    Three
  3. C
    Four
  4. D
    Five
Question 7Single Answer
The coronary arteries supply blood to which organ?
  1. A
    Lungs
  2. B
    Kidneys
  3. C
    Heart
  4. D
    Liver
Question 8Single Answer
The pulmonary veins empty into which chamber of the heart?
  1. A
    Right atrium
  2. B
    Left atrium
  3. C
    Right ventricle
  4. D
    Left ventricle
Question 9Single Answer
The inferior vena cava returns blood from which part of the body?
  1. A
    Head and neck
  2. B
    Upper limbs
  3. C
    Lower limbs and abdomen
  4. D
    Lungs
Question 10Single Answer
The outermost layer of the pericardium is called?
  1. A
    Visceral pericardium
  2. B
    Parietal pericardium
  3. C
    Myocardium
  4. D
    Endocardium
Question 11Single Answer
The Bundle of His is located in the?
  1. A
    Atria
  2. B
    Ventricles
  3. C
    Septum
  4. D
    SA node
Question 12Single Answer
The semilunar valves prevent backflow into the?
  1. A
    Atria
  2. B
    Ventricles
  3. C
    Pericardium
  4. D
    Septum
Question 13Single Answer
The largest artery in the human body is the?
  1. A
    Pulmonary artery
  2. B
    Coronary artery
  3. C
    Aorta
  4. D
    Carotid artery
Question 14Single Answer
The right ventricle pumps blood into the?
  1. A
    Aorta
  2. B
    Pulmonary artery
  3. C
    Superior vena cava
  4. D
    Left atrium
Question 15Single Answer
The fibrous skeleton of the heart primarily provides?
  1. A
    Electrical conduction
  2. B
    Structural support
  3. C
    Oxygenation
  4. D
    Filtration
Question 16Single Answer
The left coronary artery branches into the?
  1. A
    Right marginal artery
  2. B
    Posterior descending artery
  3. C
    Circumflex artery and left anterior descending artery
  4. D
    Right coronary artery
Question 17Single Answer
The AV node is located in the?
  1. A
    Right atrium
  2. B
    Left atrium
  3. C
    Right ventricle
  4. D
    Interatrial septum
Question 18Single Answer
The smallest blood vessels in the body are?
  1. A
    Arteries
  2. B
    Veins
  3. C
    Capillaries
  4. D
    Arterioles
Question 19Single Answer
The coronary sinus empties into the?
  1. A
    Left atrium
  2. B
    Right atrium
  3. C
    Left ventricle
  4. D
    Right ventricle
Question 20Single Answer
The primary function of the respiratory system is?
  1. A
    Nutrient absorption
  2. B
    Gas exchange
  3. C
    Waste elimination
  4. D
    Hormone secretion
Question 21Single Answer
The trachea is lined with which type of tissue?
  1. A
    Simple squamous epithelium
  2. B
    Stratified squamous epithelium
  3. C
    Pseudostratified ciliated columnar epithelium
  4. D
    Transitional epithelium
Question 22Single Answer
The functional unit of the lung where gas exchange occurs is the?
  1. A
    Bronchiole
  2. B
    Alveolus
  3. C
    Bronchus
  4. D
    Trachea
Question 23Single Answer
The diaphragm is primarily innervated by which nerve?
  1. A
    Vagus nerve
  2. B
    Phrenic nerve
  3. C
    Intercostal nerves
  4. D
    Radial nerve
Question 24Single Answer
The right lung has how many lobes?
  1. A
    Two
  2. B
    Three
  3. C
    Four
  4. D
    Five
Question 25Single Answer
The space between the lungs containing the heart, major blood vessels, and other structures is called the?
  1. A
    Pleural cavity
  2. B
    Mediastinum
  3. C
    Pericardial cavity
  4. D
    Thoracic cavity
Question 26Single Answer
The pleura is a double-layered membrane surrounding the?
  1. A
    Heart
  2. B
    Lungs
  3. C
    Kidneys
  4. D
    Liver
Question 27Single Answer
The main bronchi divide into?
  1. A
    Alveoli
  2. B
    Bronchioles
  3. C
    Trachea
  4. D
    Larynx
Question 28Single Answer
The larynx contains the?
  1. A
    Alveoli
  2. B
    Vocal cords
  3. C
    Diaphragm
  4. D
    Pleura
Question 29Single Answer
The process of breathing out is called?
  1. A
    Inspiration
  2. B
    Expiration
  3. C
    Ventilation
  4. D
    Respiration
Question 30Single Answer
The process of breathing in is called?
  1. A
    Inspiration
  2. B
    Expiration
  3. C
    Ventilation
  4. D
    Respiration
Question 31Single Answer
The epiglottis primarily functions to?
  1. A
    Produce sound
  2. B
    Facilitate gas exchange
  3. C
    Prevent food from entering the trachea
  4. D
    Humidify inhaled air
Question 32Single Answer
The nasal cavity is separated from the oral cavity by the?
  1. A
    Larynx
  2. B
    Pharynx
  3. C
    Palate
  4. D
    Trachea
Question 33Single Answer
The smallest airways within the lungs that lack cartilage are?
  1. A
    Main bronchi
  2. B
    Lobar bronchi
  3. C
    Bronchioles
  4. D
    Trachea
Question 34Single Answer
The hilum of the lung is?
  1. A
    The apex of the lung
  2. B
    The base of the lung
  3. C
    The region where blood vessels, bronchi, and nerves enter the lung
  4. D
    The pleural space
Question 35Single Answer
The function of surfactant in the alveoli is to?
  1. A
    Increase oxygen diffusion
  2. B
    Decrease carbon dioxide diffusion
  3. C
    Reduce surface tension
  4. D
    Increase surface tension
Question 36Single Answer
The pharynx is divided into how many regions?
  1. A
    Two
  2. B
    Three
  3. C
    Four
  4. D
    Five
Question 37Single Answer
Which of the following is not a part of the upper respiratory tract?
  1. A
    Nasal cavity
  2. B
    Pharynx
  3. C
    Larynx
  4. D
    Bronchioles
Question 38Single Answer
The space between the visceral and parietal pleura is called?
  1. A
    Mediastinum
  2. B
    Pleural cavity
  3. C
    Pericardial cavity
  4. D
    Alveolar space
Question 39Single Answer
The primary muscle of inspiration is the?
  1. A
    Intercostal muscles
  2. B
    Diaphragm
  3. C
    Abdominal muscles
  4. D
    Pectoralis major
Question 40Single Answer
The carina is located at the?
  1. A
    Larynx
  2. B
    Tracheal bifurcation
  3. C
    Bronchiole
  4. D
    Alveolus
Question 41Single Answer
The Eustachian tubes connect the middle ear to the?
  1. A
    Larynx
  2. B
    Nasopharynx
  3. C
    Oropharynx
  4. D
    Trachea
Question 42Single Answer
The T wave represents:
  1. A
    Atrial depolarization
  2. B
    Ventricular depolarization
  3. C
    Atrial repolarization
  4. D
    Ventricular repolarization
Question 43Single Answer
What is the standard paper speed for an ECG?
  1. A
    10 mm/s
  2. B
    25 mm/s
  3. C
    50 mm/s
  4. D
    100 mm/s
Question 44Single Answer
What is the purpose of the ground electrode in an ECG?
  1. A
    To amplify the signal
  2. B
    To reduce electrical interference
  3. C
    To measure blood flow
  4. D
    To stimulate the heart
Question 45Single Answer
What causes baseline wander in an ECG?
  1. A
    Muscle tremors
  2. B
    Loose electrodes
  3. C
    Breathing
  4. D
    All of the above
Question 46Single Answer
60Hz interference on an ECG is usually caused by:
  1. A
    Patient movement
  2. B
    Electrical equipment
  3. C
    Loose electrodes
  4. D
    Dry skin
Question 47Single Answer
The PR interval represents:
  1. A
    Ventricular depolarization
  2. B
    Atrial repolarization
  3. C
    Time taken for the impulse to travel from the atria to the ventricles
  4. D
    Ventricular repolarization
Question 48Single Answer
The ST segment represents:
  1. A
    Ventricular depolarization
  2. B
    Early ventricular repolarization
  3. C
    Atrial repolarization
  4. D
    Atrial depolarization
Question 49Single Answer
What is the Isoelectric line?
  1. A
    The P wave
  2. B
    The T wave
  3. C
    The baseline of the ECG
  4. D
    The QRS complex
Question 50Single Answer
The aVR lead records the electrical activity from:
  1. A
    Right arm
  2. B
    Left arm
  3. C
    Left leg
  4. D
    Chest
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