If tissue oxygen demand increases and respiratory rate and tidal volume remain the same, what happens?
A) Alveolar PO2 increases; blood and tissue PCO2 decreases.
B) Alveolar PO2 decreases; blood and tissue PCO2 decreases.
C) Alveolar PO2 increases; blood and tissue PCO2 increases.
Answer: B) Alveolar PO2 decreases; blood and tissue PCO2 decreases.
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What is the function of the auditory tube?
A. To transmit sound waves to the inner ear B. To equalize air pressure between the atmosphere and the middle ear C. To prevent the invasion of microorganisms into the inner ear D. To provide a passageway for fluid from the middle to the inner ear E. To provide an airway between the middle and inner ear
Which area of the brain controls such basic functions as breathing, swallowing, and vomiting?
A. Diencephalon B. Medulla oblongata C. Pons D. Midbrain
Which skin problem can be caused by excessive rubbing of the skin
a. folliculitis b. furuncle c. carbuncle
Starvation decreases metabolic rate by as much as ________.
A. 20% B. 65% C. 40% D. 10%