CCI - Cardiovascular Credentialing International Cardiac Anatomy and Physiology Questions and Answers

Question 1

A patient is diagnosed with mitral valve prolapse.
Which of the following structures are primarily responsible for preventing the eversion of the atrioventricular (AV) valve leaflets into the atria during ventricular systole?

Accepted Answer

Papillary muscles and chordae tendineae

Answer

Aortic sinuses

Answer

Thebesian veins

Answer

Crista terminalis

Question 2

Which of the following correctly describes the Frank-Starling mechanism of the heart?

Accepted Answer

Increased stretch of the ventricular myocardium leads to a more forceful contraction.

Answer

Increased heart rate leads to a proportional increase in stroke volume.

Answer

The force of ventricular contraction is independent of the end-diastolic volume.

Answer

Hormonal stimulation is required to match cardiac output to venous return.

Question 3

A blockage in the posterior descending artery (PDA) would most likely cause ischemia in which area of the heart, assuming a right-dominant coronary circulation?

Accepted Answer

Inferior wall of the left ventricle and posterior one-third of the interventricular septum

Answer

Anterolateral wall of the left ventricle

Answer

Anterior two-thirds of the interventricular septum

Answer

Lateral wall of the right atrium

Question 4

What is the correct sequence of electrical impulse conduction through the heart?

Accepted Answer

SA node -> AV node -> Bundle of His -> Bundle branches -> Purkinje fibers

Answer

AV node -> SA node -> Bundle of His -> Purkinje fibers

Answer

Bundle of His -> Purkinje fibers -> SA node -> AV node

Answer

Purkinje fibers -> Bundle branches -> Bundle of His -> AV node -> SA node

Question 5

Which layer of the heart wall is the thickest and composed primarily of cardiac muscle responsible for the heart's pumping action?

Accepted Answer

Myocardium

Answer

Endocardium

Answer

Pericardium

Answer

Epicardium

Question 6

A patient undergoes an echocardiogram which reveals blood flowing from the left ventricle back into the left atrium during systole. This finding indicates a failure of which valve to close properly?

Accepted Answer

Mitral valve

Answer

Aortic valve

Answer

Tricuspid valve

Answer

Pulmonary valve

A patient is diagnosed with mitral valve prolapse.Which of the following structures are primarily responsible for preventing the eversion of the atrioventricular (AV) valve leaflets into the atria during ventricular systole?

A patient is diagnosed with mitral valve prolapse.
Which of the following structures are primarily responsible for preventing the eversion of the atrioventricular (AV) valve leaflets into the atria during ventricular systole?