Anatomy and Physiology Cardiovascular System 1

Question 1

How many chambers does the human heart have?

Accepted Answer

Four

Answer

The human heart has four chambers: the right atrium, right ventricle, left atrium, and left ventricle.

Question 2

Which chamber of the heart pumps oxygenated blood to the systemic circulation?

Accepted Answer

Left ventricle

Answer

The left ventricle pumps oxygenated blood into the aorta and out to the rest of the body.

Question 3

What is the function of the mitral (bicuspid) valve?

Accepted Answer

Prevents backflow from the left ventricle into the left atrium

Answer

The mitral valve sits between the left atrium and left ventricle, preventing backflow of blood into the atrium during ventricular contraction.

Question 4

Which blood vessels carry deoxygenated blood from the heart to the lungs?

Accepted Answer

Pulmonary arteries

Answer

The pulmonary arteries carry deoxygenated blood from the right ventricle to the lungs for oxygenation.

Question 5

The sinoatrial (SA) node, the heart's natural pacemaker, is located in which chamber?

Accepted Answer

Right atrium

Answer

The SA node is located in the wall of the right atrium near the opening of the superior vena cava and initiates each heartbeat.

Anatomy and Physiology Practice Test