Heart and Circulation Test Yourself Answers

1. Via what vessel does blood enter the heart from the body?

Blood enter the heart from the body via the cranial and caudal vena cavae.

2. Blood passing through the right atrioventricular valve passes into which chamber of the heart?

Into the right ventricle.

3. What is the function of the pulmonary valve?

The pulmonary valve prevents backflow of blood from the pulmonary artery into the right ventricle.

4. Does the pulmonary artery carry deoxygenated or oxygenated blood?

The pulmonary artery carries deoxygenated blood.

5. The walls of the heart are made of what tissue?

The walls of the heart are made of cardiac muscle.

6. Does the aorta carry deoxygenated or oxygenated blood?

The aorta carries oxygenated blood.

7. Does the pulse pass down arteries or veins?

The pulse passes down arteries.

8. Give 2 other differences between arteries and veins. Arteries have thicker walls than veins. Veins have valves to prevent backflow of blood.

9. What is systole?

Systole is the period when the ventricles are contracting and sending a wave of high-pressure blood (the pulse) along the aorta and arteries of the body.

10. Circle the correct answer below. Blood flows by this route through the blood vessels of the body.

b) heart | arteries | capillaries | veins | heart

11. Name the vessel that carries blood:

from the heart to the main organs of the body:aorta

from the aorta to the brain: carotid artery

from the aorta to the kidneys: renal artery

from the intestines to the liver: hepatic portal vessel

from the aorta to the heart muscle: coronary artery