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Pachacha [2.7K]
3 years ago
5

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

Biology
1 answer:
KengaRu [80]3 years ago
6 0

Answer:

C. Systemic arterioles respond to a decrease in PO₂ by dilating, but pulmonary arterioles constrict in response to decreased PO₂.

Explanation:

In the arterioles, vasoconstriction is a response to high oxygen while vasodilation is a response to carbon dioxide and low pH. However, in the pulmonary arterioles, vasoconstriction occurs as a response to low oxygen and this mechanism is called hypoxic pulmonary vasoconstriction (HPV).

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