CVT Cardiac Anatomy & Physiology 2

Question 1

Which layer of the heart wall contains the myocardium?

Accepted Answer

Myocardium

Answer

The myocardium is the middle muscular layer of the heart wall responsible for pumping action.

Question 2

The coronary sinus drains deoxygenated blood from the myocardium into which chamber?

Accepted Answer

Right atrium

Answer

The coronary sinus empties venous blood from the myocardium into the right atrium.

Question 3

What is the primary pacemaker of the heart?

Accepted Answer

SA node

Answer

The sinoatrial (SA) node spontaneously depolarizes at the highest rate and sets the heart's rhythm.

Question 4

During systole, intraventricular pressure exceeds aortic pressure at which point?

Accepted Answer

Rapid ejection

Answer

During rapid ejection, ventricular pressure exceeds aortic pressure, causing blood to flow into the aorta.

Question 5

The chordae tendineae connect the papillary muscles to which structures?

Accepted Answer

Atrioventricular valve leaflets

Answer

Chordae tendineae anchor the AV valve leaflets to papillary muscles, preventing prolapse during ventricular contraction.

(CVT) Cardiovascular Technologist Certification Practice Test