Match the change in gas composition with the response (disregard weak responses).

1. Arterioles: systemic constrict, pulmonary dilate.
2. Bronchioles and systemic arterioles dilate.
3. Arterioles: systemic dilate, pulmonary constrict.
4. Bronchioles and systemic arterioles constrict.

A. PO2 increases.
B. PCO2 increases.
C. PO2 decreases.
D. PCO2 decreases.


1. A. PO2 increases.
2. B. PCO2 increases.
3. C. PO2 decreases.
4. D. PCO2 decreases.

Anatomy & Physiology

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A. cystic duct B. hepatopancreatic ampulla C. hepatic duct D. duodenal ampulla

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A) pH decreases. B) HCO3- decreases. C) CO increases. D) H+ decreases.

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a muscle that holds a bone steady during an action is called a ____________________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology