Untitled Flashcards Set

Q1: Metabolites exchange by diffusion with the tissues and the cells in which of the following locations?

A) artery
B) arteriole
C) capillary
D) venule
E) vein
Answer: C

Q2: Blood returning from the systemic circuit enters the:

A) left atrium
B) left ventricle
C) right atrium
D) right ventricle
Answer: C

Q3: Blood is pumped into the pulmonary circuit from the:

A) left atrium
B) left ventricle
C) right atrium
D) right ventricle
Answer: D

Q4: Arrange the following structures in the correct order as blood would pass through them.

1. left atrium

2. pulmonary arteries

3. systemic veins

4. right ventricle

5. right atrium

6. pulmonary veins
   A) 4, 6, 2, 3, 1, 5
   B) 3, 5, 4, 2, 6, 1
   C) 2, 6, 4, 5, 3, 1
   D) 1, 5, 6, 2, 3, 4
   E) 6, 1, 5, 4, 2, 3
   Answer: B

Q5: The process of decrease in any vessel diameter that occurs due to smooth muscle contraction is called:

A) venoconstriction
B) venodilation
C) vasoconstriction
D) vasodilation
E) None of the answers is correct
Answer: C

Q6: The muscular layer of a blood vessel is the:

A) tunica intima
B) tunica externa
C) tunica media
D) tunica interna
E) tunica adventitia
Answer: C

Q7: Compared to arteries, veins:

A) have internal and external elastic membranes
B) have more smooth muscle in their tunica media
C) have a pleated endothelium
D) have thinner walls
E) are usually round when cut
Answer: D

Q8: Arrange the structures in the following list in the order that blood will encounter as it flows from the heart back to the heart in the cardiovascular circuit.

1. venules

2. arterioles

3. capillaries

4. elastic arteries

5. medium veins

6. large veins

7. muscular arteries
   A) 7, 4, 2, 3, 1, 5, 6
   B) 6, 5, 1, 3, 2, 7, 4
   C) 5, 6, 1, 3, 2, 7, 4
   D) 2, 7, 6, 3, 1, 5, 6
   E) 4, 7, 2, 3, 1, 5, 6
   Answer: E

Q9: The layer between the tunica media and the tunica externa in a large artery is the:

A) tunica intima
B) external elastic membrane
C) tunica media
D) internal elastic membrane
E) tunica externa
Answer: B

Q10: Which of the following layers of a vessel contains collagen fibers with scattered bands of elastic fibers?

A) tunica intima
B) external elastic membrane
C) tunica media
D) internal elastic membrane
E) tunica externa
Answer: E