Multiple Choice
Match the change with the cardiovascular event described.
-During fasting, some capillary beds in the digestive tract are closed and therefore have no blood flow.Others are open to meet the minimal need of the tract for blood flow.During eating and as long as food is present in the tract, all capillary beds open to flow.What happens to total cross-sectional area of vessels in the digestive tract?
A) increased
B) decreased
C) unchanged
D) stopped
Correct Answer:

Verified
Correct Answer:
Verified
Q94: Drugs known as beta blockers will<br>A) increase
Q95: The heart is enclosed in the _.
Q96: If there is a blockage between the
Q97: _ are blood vessels that carry blood
Q98: If the membranes of the cardiac muscle
Q100: Using the figure below (Fig.14.18 from your
Q101: When the heart is in fibrillation,<br>A) the
Q102: Acetylcholine is excitatory at the neuromuscular junction,
Q103: Veins are said to carry deoxygenated blood.Does
Q104: According to Starling's law of the heart,