Quiz 11: The Cardiovascular System

Question 1

Which valve is closed during heart relaxation to prevent blood from backflowing from the aorta into the heart?

Answer 1

Aortic semilunar valve

Question 2

The coronary veins empty blood from the myocardium into a large vein on the posterior side of the heart known as the ________.

Answer 2

Coronary sinus

Question 3

The transportation of blood from the right side of the heart to the lungs and back to the left side of the heart is known as ________ circulation.

Answer 3

Pulmonary

Question 4

The two superior receiving chambers of the heart are known as the ________, while the two inferior discharging chambers of the heart are known as the ________.

Answer 4

Atria; ventricles

Question 5

Which of the following is NOT a major branch of the coronary arteries?

Answer 5

Coronary sinus

Question 6

Blood leaves the left ventricle through an artery known as the ________.

Answer 6

Aorta

Question 7

Which valve is located between the right atrium and right ventricle?

Answer 7

Tricuspid valve

Question 8

Oxygenated blood nourishing the myocardium comes from vessels that branch off the aorta called ________.

Answer 8

Coronary arteries

Question 9

Which of the following is often called the pacemaker of the heart?

Answer 9

Sinoatrial (SA) node

Question 10

The walls of the ________ are substantially thicker because that chamber acts as the more powerful systemic pump of the heart.

Answer 10

Left ventricle