Which of the following conditions would result in a systemic arterial PO2 lower than is typical of a healthy person at sea level?
A. Breathing regular air in a hyperbaric chamber (higher that normal atmospheric pressure)
B. Having iron-deficiency anemia
C. Traveling to high altitude
D. Maintaining alveolar ventilation constant while decreasing metabolic rate
E. Breathing 100% oxygen
Answer: C
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Two hormones that have opposing effects are called ________.
Fill in the blank(s) with the appropriate word(s).
When will the blood pressure be greater?
A) when the peripheral vessels dilate B) when the peripheral vessels constrict