Multiple Choice
In a capillary bed, relaxation of the precapillary sphincter
A) causes more blood flow through thoroughfare channels.
B) causes less blood to flow through capillaries.
C) occurs when the tissue in the area does not need more oxygen.
D) is voluntary.
E) occurs when the tissue in the area needs more oxygen.
Correct Answer:

Verified
Correct Answer:
Verified
Q164: Increased venous tone will<br>A) relax the veins.<br>B)
Q165: Resistance in the cardiovascular system<br>A) tends to
Q166: Which vessel is often used to draw
Q167: The kidneys are supplied by the _
Q168: Which kind of vessel provides a bypass
Q170: Cardiac output is equal to stroke volume
Q171: Precapillary sphincters<br>A) serve as valves in veins.<br>B)
Q172: For the following, match the term with
Q173: The innermost layer of a blood vessel
Q174: Match the term with the best description.<br>-Thoroughfare