Which of the following is true of megakaryocytes?
A. They give rise to macrophages.
B. They give rise to platelets.
C. They secrete histamine.
D. They aggregate to plug tears in blood vessels.
E. They are small (no larger than 2 to 4 mm in diameter).
B. They give rise to platelets.
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Approximately what percentage of body weight does muscle comprise?
a. 20% b. 35% c. 50% d. 70% e. 85%
Repaying the oxygen debt requires replacing oxygen that was ________.
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Which of the following would you observe in a patient with a tumor of the cerebellum?
A. loss of general sensation B. balance impairment C. no heartbeat D. great sex drive E. no conscious thought