Cardiovascular Function Test Bank
Questions And Correct Answers
(Verified Answers) Plus Rationales
2025/2026 Q&A | Instant Download
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1. Which structure is responsible for initiating the electrical impulse
of the heart?
A. AV node
B. Bundle of His
C. SA node
D. Purkinje fibers
The SA (sinoatrial) node is the natural pacemaker of the heart,
generating impulses that initiate each heartbeat.
2. The period of ventricular contraction is called:
A. Diastole
B. Systole
C. Repolarization
D. Atrial kick
Systole refers to the phase of the cardiac cycle when ventricles
contract to pump blood out of the heart.
3. Which blood pressure reading indicates hypertension stage 1 in
adults?
A. 118/78 mmHg
B. 120/80 mmHg
,C. 130/85 mmHg
D. 140/90 mmHg
According to current guidelines, stage 1 hypertension is systolic 130–
139 or diastolic 80–89 mmHg.
4. Which electrolyte is most critical in cardiac conduction?
A. Sodium
B. Calcium
C. Potassium
D. Magnesium
Potassium plays a vital role in maintaining normal cardiac rhythm
and conduction.
5. The first heart sound (S1) is caused by:
A. Closure of semilunar valves
B. Closure of atrioventricular (mitral and tricuspid) valves
C. Opening of AV valves
D. Ventricular repolarization
S1 occurs when the mitral and tricuspid valves close at the beginning
of ventricular systole.
6. Which artery is most commonly used to assess peripheral pulses?
A. Brachial
B. Radial
C. Femoral
D. Popliteal
The radial artery is easily accessible and commonly used to check
pulse rate and rhythm.
, 7. A patient presents with jugular vein distension, peripheral
edema, and hepatomegaly. Which condition is most likely?
A. Left-sided heart failure
B. Acute myocardial infarction
C. Right-sided heart failure
D. Atrial fibrillation
Right-sided heart failure causes systemic venous congestion, leading
to JVD, edema, and liver enlargement.
8. Which lab test is most specific for detecting myocardial injury?
A. CK-MB
B. Myoglobin
C. Troponin I or T
D. BNP
Troponin I and T are highly specific and sensitive markers for cardiac
muscle injury.
9. Which vessel carries oxygenated blood from the lungs to the
heart?
A. Pulmonary artery
B. Pulmonary vein
C. Superior vena cava
D. Coronary artery
Pulmonary veins transport oxygen-rich blood from the lungs to the
left atrium.
10. A patient with a history of hypertension presents with chest
pain radiating to the left arm. The priority action is:
Questions And Correct Answers
(Verified Answers) Plus Rationales
2025/2026 Q&A | Instant Download
1. Which structure is responsible for initiating the electrical impulse
of the heart?
A. AV node
B. Bundle of His
C. SA node
D. Purkinje fibers
The SA (sinoatrial) node is the natural pacemaker of the heart,
generating impulses that initiate each heartbeat.
2. The period of ventricular contraction is called:
A. Diastole
B. Systole
C. Repolarization
D. Atrial kick
Systole refers to the phase of the cardiac cycle when ventricles
contract to pump blood out of the heart.
3. Which blood pressure reading indicates hypertension stage 1 in
adults?
A. 118/78 mmHg
B. 120/80 mmHg
,C. 130/85 mmHg
D. 140/90 mmHg
According to current guidelines, stage 1 hypertension is systolic 130–
139 or diastolic 80–89 mmHg.
4. Which electrolyte is most critical in cardiac conduction?
A. Sodium
B. Calcium
C. Potassium
D. Magnesium
Potassium plays a vital role in maintaining normal cardiac rhythm
and conduction.
5. The first heart sound (S1) is caused by:
A. Closure of semilunar valves
B. Closure of atrioventricular (mitral and tricuspid) valves
C. Opening of AV valves
D. Ventricular repolarization
S1 occurs when the mitral and tricuspid valves close at the beginning
of ventricular systole.
6. Which artery is most commonly used to assess peripheral pulses?
A. Brachial
B. Radial
C. Femoral
D. Popliteal
The radial artery is easily accessible and commonly used to check
pulse rate and rhythm.
, 7. A patient presents with jugular vein distension, peripheral
edema, and hepatomegaly. Which condition is most likely?
A. Left-sided heart failure
B. Acute myocardial infarction
C. Right-sided heart failure
D. Atrial fibrillation
Right-sided heart failure causes systemic venous congestion, leading
to JVD, edema, and liver enlargement.
8. Which lab test is most specific for detecting myocardial injury?
A. CK-MB
B. Myoglobin
C. Troponin I or T
D. BNP
Troponin I and T are highly specific and sensitive markers for cardiac
muscle injury.
9. Which vessel carries oxygenated blood from the lungs to the
heart?
A. Pulmonary artery
B. Pulmonary vein
C. Superior vena cava
D. Coronary artery
Pulmonary veins transport oxygen-rich blood from the lungs to the
left atrium.
10. A patient with a history of hypertension presents with chest
pain radiating to the left arm. The priority action is:
