The tough, fibrous outer meningeal layer is called the:
A. pia mater.
B. arachnoid.
C. gray mater.
D. dura mater.
Answer: C. gray mater.
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Most of the time whole muscles do not contract at full strength because
A) we tend not to need the full capabilities of our muscles. B) the muscle fibers will use up their energy reserves and the muscle will be forced to relax. C) commonly the load is only the weight of our own body. D) only a few motor units are recruited. E) All of the answers are correct.
Under normal circumstances, which passageway is capable of conducting air, food, or liquid?
A. Nasopharynx B. Laryngopharynx C. Glottis D. Larynx E. Trachea
Compared to white women, African-American women are _____ likely to terminate a pregnancy with an abortion.
A. much less B. less C. about equally as D. much more
In severe cases of shock
A. the normal regulatory mechanisms for blood pressure control are adequate to return the body to homeostasis. B. the cardiac output rises dramatically. C. a positive feedback cycle develops. D. the baroreceptor reflexes are adequate for returning blood pressure to normal. E. renin secretion decreases, causing a rise in blood pressure.