Certificate for Individuals in Acute CardioVascular Care ACVC Exam
Question 1: Which chamber of the heart receives deoxygenated blood from the systemic circulation?
a) Left ventricle
b) Right ventricle
c) Left atrium
d) Right atrium
Answer: d
Explanation: The right atrium collects deoxygenated blood from the systemic circulation via the superior and inferior vena cava.
Question 2: What structure initiates the electrical impulse in a normal heart?
a) Atrioventricular node
b) Purkinje fibers
c) Bundle of His
d) Sinoatrial node
Answer: d
Explanation: The sinoatrial (SA) node is the natural pacemaker that initiates the impulse in a healthy heart.
Question 3: Which valve prevents backflow into the left atrium during left ventricular contraction?
a) Pulmonary valve 1 / 4
Certificate for Individuals in Acute CardioVascular Care ACVC Exam
b) Tricuspid valve
c) Aortic valve
d) Mitral valve
Answer: d
Explanation: The mitral valve (bicuspid) regulates blood flow from the left atrium to the left ventricle, preventing backflow during systole.
Question 4: In the cardiac cycle, what phase is characterized by active ventricular contraction?
a) Diastole
b) Systole
c) Repolarization
d) Resting phase
Answer: b
Explanation: Systole is the phase where the ventricles contract to pump blood out of the heart.
Question 5: Which coronary artery primarily supplies the anterior wall of the left ventricle?
a) Left circumflex
b) Right coronary
c) Left anterior descending
d) Posterior descending 2 / 4
Certificate for Individuals in Acute CardioVascular Care ACVC Exam
Answer: c
Explanation: The left anterior descending (LAD) artery supplies blood to the anterior wall and much of the interventricular septum.
Question 6: What best describes the function of Purkinje fibers in cardiac conduction?
a) Initiate the heartbeat
b) Delay the electrical impulse
c) Rapidly conduct impulses to the ventricles
d) Contract the atria
Answer: c
Explanation: Purkinje fibers rapidly conduct the electrical impulse throughout the ventricles, ensuring coordinated contraction.
Question 7: Which component of the circulatory system is responsible for the exchange of nutrients and oxygen at the tissue level?
a) Arteries
b) Veins
c) Capillaries
d) Lymphatics
Answer: c
Explanation: Capillaries are the smallest blood vessels where gas, nutrient, and waste exchange occurs. 3 / 4
Certificate for Individuals in Acute CardioVascular Care ACVC Exam
Question 8: What is the primary determinant of cardiac output?
a) Ventricular compliance
b) Heart rate and stroke volume
c) Blood viscosity
d) Vascular resistance
Answer: b
Explanation: Cardiac output is determined by multiplying the heart rate by the stroke volume.
Question 9: What role does the atrioventricular (AV) node serve during cardiac conduction?
a) It speeds conduction
b) It delays conduction
c) It hyperpolarizes the myocardium
d) It terminates the impulse
Answer: b
Explanation: The AV node delays the electrical impulse to allow complete ventricular filling before contraction.
Question 10: The systemic arterial pressure is most directly influenced by which of the following?
a) Cardiac output and systemic vascular resistance
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