Causes of alopecia (baldness) include ________
A) Scalp infections B) Aging and heredity factors
C) Chemotherapy and other medications D) All of the above
D
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Once inside the sympathetic trunk, the sympathetic preganglionic axons may/will
A. follow any of the routes listed. B. travel inferiorly. C. remain at the level of entry. D. travel superiorly.
A patient suffers an inability to shrug their shoulders. The nerve most likely to be damaged is the
A) vagus. B) accessory. C) facial. D) trigeminal. E) vestibulocochlear.
Aldosterone exerts effects on principal cells of the kidney by causing
A. increased numbers of Na+/K+ pumps. B. decreased numbers of Na+/K+ pumps. C. increased levels of cAMP and increases in the total number of Na+ channels. D. decreased levels of cAMP and decreases in the number of open K+ channels.
During an action potential of a neuron, the type of ion that enters the cell and causes depolarization is the _______ ion.
Fill in the blank(s) with the appropriate word(s).