Q 1. The human heart is located in the __________.
A) Abdomen
B) Chest (thoracic cavity)
C) Skull
D) Pelvis
Answer: B) Chest (thoracic cavity)
Q 2. How many chambers are there in the human heart?
A) Two
B) Three
C) Four
D) Five
Answer: C) Four
Q 3. Which chamber pumps oxygenated blood to the body?
A) Right atrium
B) Right ventricle
C) Left atrium
D) Left ventricle
Answer: D) Left ventricle
Q 4. Which blood vessel carries oxygenated blood from the lungs to the heart?
A) Pulmonary artery
B) Pulmonary vein
C) Aorta
D) Vena cava
Answer: B) Pulmonary vein
Q 5. The main artery of the body is called:
A) Vena cava
B) Pulmonary artery
C) Aorta
D) Capillary
Answer: C) Aorta
Q 6. The function of the heart is to:
A) Digest food
B) Pump blood throughout the body
C) Control body temperature
D) Produce hormones
Answer: B) Pump blood throughout the body
Q 7. The pacemaker of the human heart is the:
A) AV node
B) SA node
C) Bundle of His
D) Purkinje fibers
Answer: B) SA node
Q 8. Which layer of the heart wall is responsible for contraction?
A) Endocardium
B) Myocardium
C) Pericardium
D) Epicardium
Answer: B) Myocardium
Q 9. Which vessel supplies oxygenated blood to the heart muscle itself?
A) Pulmonary vein
B) Aorta
C) Coronary arteries
D) Vena cava
Answer: C) Coronary arteries
Q 10. Cardiac output is the product of:
A) Blood pressure × heart rate
B) Stroke volume × heart rate
C) Heart rate × respiration rate
D) Stroke volume × blood pressure
Answer: B) Stroke volume × heart rate