An increase in the partial pressure of oxygen causes pulmonary arterioles to ________, thereby altering ________ to make gas exchange more efficient.
A. constrict; perfusion
B. constrict; ventilation
C. dilate; perfusion
D. dilate; ventilation
Answer: C
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Sensory information travels from the spinal cord to the brain via
a. afferent pathways b. efferent pathways c. ascending tracts d. descending tracts e. the dorsal root ganglion
In the tubular segments permeable to H2O, solute reabsorption is always accompanied by comparable __________ reabsorption because of __________ considerations
Fill in the blank(s) with correct word
Glands that secrete products directly into the blood are
A. goblet glands. B. plasma glands. C. endocrine glands. D. exocrine glands.