AP Blood Vessels Practice Test 50 Questions

A&P BLOOD VESSELS

PRACTICE TEST 50

QUESTIONS

Question 1: Which blood vessel type normally carries blood away from the heart?

Choices:

1) Artery 2) Vein 3) Capillary 4) Venule

Correct Answer: Artery

Explanation: Arteries are de�ned by the direction of blood �ow: they carry blood away from the heart.Page 1

Question 2: Which sequence correctly traces blood �ow through the systemic microcirculation?

Choices:

1) Artery → vein → arteriole → capillary 2) Arteriole → artery → capillary → venule 3) Artery → arteriole → capillary → venule → vein 4) Vein → venule → capillary → arteriole → artery

Correct Answer: Artery → arteriole → capillary → venule → vein

Explanation: Systemic blood moves from arteries into arterioles, then through capillaries, and returns through venules and veins.

Question 3: Which vessel layer is lined by simple squamous epithelium called

endothelium?

Choices:

1) Tunica externa 2) Tunica media 3) Tunica intima 4) Vasa vasorum

Correct Answer: Tunica intima

Explanation: The tunica intima is the innermost layer and includes the endothelial lining that contacts the blood.Page 2

Question 4: Which tunic contains the greatest amount of smooth muscle in a typical muscular artery?

Choices:

1) Tunica intima 2) Tunica media 3) Tunica externa 4) Endocardium

Correct Answer: Tunica media

Explanation: The tunica media is dominated by smooth muscle and elastic tissue and controls vessel diameter.

Question 5: What is the primary role of the tunica externa?

Choices:

1) Generate the pulse wave 2) Provide an endothelial exchange surface 3) Anchor and reinforce the vessel with connective tissue 4) Open and close precapillary sphincters

Correct Answer: Anchor and reinforce the vessel with connective tissue

Explanation: The tunica externa is mainly connective tissue that protects, reinforces, and anchors the vessel.Page 3