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