In emphysema, all of the following occur except
A) alveoli collapse.
B) compliance increases.
C) there is elevated PCO2 in the blood.
D) the surface area for gas exchange decreases.
E) patients present with cyanosis.
Answer: E
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Lymphocytes
A) are actively phagocytic. B) destroy red blood cells. C) respond to antigens. D) are primarily found in red bone marrow. E) decrease in number during infection.
A resting muscle generates most of its ATP by
A) conversion of creatine phosphate. B) anaerobic respiration. C) aerobic respiration. D) glycolysis. E) heat loss.
The H zone of the sarcomere consists of myosin but does not contain actin
Indicate whether the statement is true or false
Rapid eye movement is descriptive of or occurs during
A. slow-wave sleep. B. paradoxical sleep. C. both slow-wave sleep and paradoxical sleep. D. neither slow-wave sleep nor paradoxical sleep.