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BIOLOGY > heart multiple choice > Flashcards

heart multiple choice Flashcards

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1
Q
  1. What is the primary function of the right ventricle?
    A) To pump deoxygenated blood to the lungs
    B) To pump oxygenated blood to the body
    C) To receive deoxygenated blood from the body
    D) To receive oxygenated blood from the lungs
A

A) To pump deoxygenated blood to the lungs

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2
Q

Which blood vessel carries oxygenated blood from the heart to the body?
A) Pulmonary vein
B) Pulmonary artery
C) Aorta
D) Vena cava

A

C) Aorta

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3
Q

Which of the following is a characteristic of the left ventricle?
A) It pumps oxygenated blood to the lungs.
B) It has thinner walls than the right ventricle.
C) It pumps oxygenated blood to the body.
D) It has a smaller lumen than the right ventricle.

A

C) It pumps oxygenated blood to the body.

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4
Q
  1. What is the function of the valves in the heart?
    A) To control blood pressure
    B) To ensure blood flows in one direction
    C) To provide oxygen to the heart muscle
    D) To regulate heart rate
A

B) To ensure blood flows in one direction

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5
Q

Which of the following is the function of the pulmonary artery?
A) Carries oxygenated blood to the body
B) Carries deoxygenated blood to the lungs
C) Carries oxygenated blood to the left atrium
D) Carries deoxygenated blood to the right atrium

A

B) Carries deoxygenated blood to the lungs

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6
Q

Which chamber of the heart receives oxygenated blood from the lungs?
A) Left atrium
B) Right atrium
C) Left ventricle
D) Right ventricle

A

A) Left atrium

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7
Q

What is the name of the natural pacemaker of the heart?
A) AV node
B) Sinoatrial (SA) node
C) Bundle of His
D) Purkinje fibers

A

B) Sinoatrial (SA) node

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8
Q

What is a stent used for in heart treatment?
A) To replace a damaged heart valve
B) To widen a blocked artery
C) To regulate heart rate
D) To repair a damaged heart muscle

A

B) To widen a blocked artery

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9
Q
  1. Which vessel returns deoxygenated blood from the body to the heart?
    A) Pulmonary vein
    B) Aorta
    C) Vena cava
    D) Pulmonary artery
A

C) Vena cava

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10
Q
  1. What happens during diastole?
    A) The heart contracts, pumping blood to the body.
    B) The heart relaxes, and the chambers fill with blood.
    C) Blood is pumped into the pulmonary artery.
    D) Oxygenated blood is delivered to the heart muscle.
A

B) The heart relaxes, and the chambers fill with blood.

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11
Q
  1. Which blood vessel carries oxygenated blood from the lungs to the heart?
    A) Pulmonary artery
    B) Pulmonary vein
    C) Aorta
    D) Vena cava
A

B) Pulmonary vein

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12
Q
  1. What is the function of the left atrium?
    A) To pump deoxygenated blood to the lungs
    B) To receive oxygenated blood from the body
    C) To pump oxygenated blood to the body
    D) To receive oxygenated blood from the lungs
A

D) To receive oxygenated blood from the lungs

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13
Q
  1. In coronary artery disease, which part of the heart is affected?
    A) The ventricles
    B) The atria
    C) The coronary arteries
    D) The valves
A

C) The coronary arteries

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14
Q
  1. Which of the following is a function of coronary arteries?
    A) Deliver oxygenated blood to the heart muscle
    B) Carry deoxygenated blood from the heart
    C) Supply oxygenated blood to the lungs
    D) Help regulate heart rate
A

A) Deliver oxygenated blood to the heart muscle

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15
Q
  1. What happens if the bicuspid (mitral) valve fails to close properly?
    A) It causes blood to flow backward into the left atrium.
    B) It causes blood to flow backward into the right atrium.
    C) It causes the left ventricle to overfill.
    D) It prevents oxygenated blood from reaching the body.
A

A) It causes blood to flow backward into the left atrium

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16
Q
  1. Which of the following is NOT a part of the heart’s conduction system?
    A) AV node
    B) Sinoatrial (SA) node
    C) Left ventricle
    D) Bundle of His
A

C) Left ventricle

17
Q
  1. What is the purpose of bypass surgery in heart patients?
    A) To replace a damaged heart valve
    B) To bypass blocked arteries and improve blood flow
    C) To regulate the heart rate
    D) To repair damaged heart muscle
A

B) To bypass blocked arteries and improve blood flow

18
Q
  1. How does exercise affect the heart rate?
    A) It decreases the heart rate.
    B) It has no effect on the heart rate.
    C) It increases the heart rate to meet the body’s oxygen demands.
    D) It stops the heart from beating.
A

C) It increases the heart rate to meet the body’s oxygen demands.

19
Q
  1. What is an artificial pacemaker used for?
    A) To regulate the heart’s rhythm when the natural pacemaker fails
    B) To replace damaged heart valves
    C) To provide extra oxygen to the heart muscle
    D) To perform heart surgery
A

A) To regulate the heart’s rhythm when the natural pacemaker fails

20
Q
  1. What is the role of veins in the circulatory system?
    A) To carry oxygenated blood to the heart
    B) To carry deoxygenated blood to the heart
    C) To carry oxygenated blood to the lungs
    D) To pump blood through the body
A

Answer: B) To carry deoxygenated blood to the heart

21
Q
  1. Which part of the heart ensures blood does not flow backward into the ventricles?
    A) Aorta
    B) Semilunar valves
    C) Pulmonary veins
    D) Coronary arteries
A

B) Semilunar valves

22
Q
  1. What is a leaky heart valve?
    A) A valve that opens too early
    B) A valve that does not close fully, allowing blood to flow backward
    C) A valve that prevents blood flow entirely
    D) A valve that regulates blood pressure
A

B) A valve that does not close fully, allowing blood to flow backward

BIOLOGY (8 decks)

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