CCT Cardiovascular Anatomy and Physiology 2

Question 1

Which layer of the heart wall is responsible for the contractile function of the heart?

Accepted Answer

Myocardium

Answer

Epicardium

Answer

Endocardium

Answer

Pericardium

Question 2

What is the primary function of the tricuspid valve?

Accepted Answer

Prevent backflow of blood from the right ventricle into the right atrium during systole

Answer

Prevent backflow from the left ventricle into the left atrium

Answer

Control blood flow from the left atrium to the left ventricle

Answer

Regulate flow from the aorta back into the left ventricle

Question 3

The sinoatrial (SA) node is located in which cardiac structure?

Accepted Answer

Right atrium, near the superior vena cava junction

Answer

Left atrium, near the pulmonary veins

Answer

Interventricular septum

Answer

AV junction between the atria and ventricles

Question 4

Which coronary artery primarily supplies the left ventricle's anterior wall and interventricular septum?

Accepted Answer

Left anterior descending (LAD) artery

Answer

Right coronary artery (RCA)

Answer

Left circumflex artery (LCX)

Answer

Posterior descending artery (PDA)

Question 5

During the cardiac cycle, what occurs during ventricular diastole?

Accepted Answer

The ventricles relax and fill with blood from the atria

Answer

The ventricles contract and eject blood into the arteries

Answer

The atrioventricular valves close

Answer

The semilunar valves open

Question 6

What is the normal range for cardiac output at rest in a healthy adult?

Accepted Answer

4 to 8 liters per minute

Answer

1 to 2 liters per minute

Answer

10 to 15 liters per minute

Answer

0.5 to 1 liter per minute