Which of the Following Statements About the Response of Arteriolar

question 1

Multiple Choice

Which of the following statements about the response of arteriolar smooth muscle to changing oxygen partial pressures is TRUE?

• A)Both systemic and pulmonary arterioles respond to a decrease in PO₂ by constricting.
• B)Both systemic and pulmonary arterioles respond to a decrease in PO₂ by dilating.
• C)Systemic arterioles respond to a decrease in PO₂ by dilating,but pulmonary arterioles constrict in response to decreased PO₂.
• D)Systemic arterioles respond to a decrease in PO₂ by constricting,but pulmonary arterioles dilate in response to decreased PO₂.
• E)Changes in PO₂ do not affect arteriolar smooth muscle in the pulmonary system.

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Definitions:

Virtually Unlimited

A term used to describe a resource or supply that is so abundant it appears to be almost without limit.

Scarcity and Choice

Refers to the fundamental economic problem of having unlimited human wants in a world of limited resources, leading to the necessity of making choices on how to allocate resources efficiently.

Economic Decision

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Surpluses and Shortages

Conditions where the quantity of a good or service exceeds or falls short of the quantity demanded at a given price.