As one moves up in altitude, the atmospheric pressure decreases. In Vail, CO (altitude 8022 ft or 2445 m), the atmospheric pressure is approximately 570 mmHg. What would the partial pressure of oxygen be in Vail?
A. 21%
B. The PO2 cannot be calculated from the available information.
C. 120 mm Hg
D. 160 mm Hg
Answer: C. 120 mm Hg
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Answer the following statement true (T) or false (F)
In comparison to the distal tubule, the proximal tubule has a
A) leakier epithelium and a larger apical surface area. B) tighter epithelium and a larger apical surface area. C) leakier epithelium and is more responsive to hormones. D) tighter epithelium and is more responsive to hormones. E) small apical surface area and is more responsive to hormones.
Fatty folds of skin that encircle and partially conceal the labia minora and vestibule are the
A) fornices. B) ampullae. C) labia majora. D) mons pubis. E) vestibular arches.
All of the following occur when a rod is stimulated by light, except
A) ganglion cells pick up changes in activity in the bipolar cells. B) the retinal changes to a more linear shape. C) neurotransmitter release changes. D) Na+ permeability changes. E) ATP is hydrolyzed.