Cardiovascular System

Question 1

What is the primary function of veins?

Answer 1

Veins return blood to the heart

Question 2

What is the function of the pulmonary arteries?

Answer 2

Pulmonary arteries carry oxygen-free blood to the lungs

Question 3

What distinguishes pulmonary arteries from other arteries?

Answer 3

Pulmonary arteries transport blood without nutrients or oxygen

Question 4

What is the purpose of the aortic artery?

Answer 4

Carries oxygen-rich blood to the rest of the body

Question 5

True or false: blood pressure is high in veins

Answer 5

False.

In veins, blood pressure is low due to the long journey it has had since leaving the heart. For this reason, veins have thinner walls than arteries and their lumens are larger to accommodate a larger volume of blood.

Question 6

True or false: Artery walls are more elastic than veins because of the need to stretch under the pressure of each heart beat

Answer 6

True.
Arteries experience the full force of the hearts pumping action,
they are exposed to higher blood pressures than veins and capillaries. Arteries have the thickest tunica media and the elastin that this layer is made up of allows them to stretch and recoil, while the smooth muscle allows them to constrict and dilate.

Question 7

What is the main function of the right atrium?

Answer 7

The right atrium recieves oxygen-poor blood from the body and pumps it to the right ventricle

Question 8

What role does the right ventricle play in the circulatory system?

Answer 8

The right ventricle pumps deoxygenated blood to the lungs for oxygenation through the pulmonary artery

Question 9

How does the left atrium contribute to the heart’s function?

Answer 9

The left atrium receives highly oxygenated blood and pumps it into the left ventricle

Question 10

What is the primary function of the left ventricle?

Answer 10

The left ventricle receives oxygen-rich blood and sends it to the rest of the body through the aortic artery