Anatomy and Physiology Cardiovascular System 2

Question 1

Which type of blood vessel has the thickest walls and is designed to withstand the highest pressures?

Accepted Answer

Arteries

Answer

Arteries have thick, elastic walls composed of three layers (tunica intima, media, and externa) to withstand the high pressure of blood ejected from the heart.

Question 2

What is the primary function of capillaries?

Accepted Answer

Exchange gases, nutrients, and waste products with tissues

Answer

Capillaries are the site of exchange between blood and tissues, allowing oxygen, nutrients, and waste products to move across their thin walls.

Question 3

Which vessel carries oxygenated blood from the lungs back to the heart?

Accepted Answer

Pulmonary vein

Answer

The pulmonary veins (four in total) return oxygen-rich blood from the lungs to the left atrium of the heart.

Question 4

Systolic blood pressure represents:

Accepted Answer

The pressure in arteries when the ventricles are contracting

Answer

Systolic pressure is the peak pressure in the arteries that occurs when the left ventricle contracts and ejects blood into the aorta.

Question 5

The aorta is classified as the largest:

Accepted Answer

Artery in the body

Answer

The aorta is the largest artery in the body, originating from the left ventricle and distributing oxygenated blood to the systemic circulation.

Anatomy and Physiology Practice Test

Anatomy and Physiology Practice Test

Anatomy and Physiology Cardiovascular System 2