Match the Change with the Cardiovascular Event Described

question 99

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

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