The precentral gyrus ________.
A. is the cortical area to which taste sensations come
B. is a center for audition
C. is important for somatosensation
D. is a major motor area of the brain
Answer: D. is a major motor area of the brain
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After prolonged exertion in a hot climate, baroreceptors would ________ firing, leading to ________ secretion of ________ and thus ________ renal reabsorption of ________.
A. increase; increased; renin; increased; Na+ B. increase; decreased; vasopressin; decreased; water C. decrease; decreased; vasopressin; increased; water D. decrease; increased; renin; decreased; Na+ E. decrease; increased; vasopressin; increased; water
What is the correct order for the sequence of blood vessels that blood would travel in the systemic circuit, starting at the aorta? 1. venules 2. arterioles 3. capillaries 4. elastic arteries 5. medium veins 6. large veins 7. muscular arteries
A) 6, 5, 1, 3, 2, 7, 4 B) 4, 7, 2, 3, 1, 5, 6 C) 7, 4, 2, 3, 1, 5, 6 D) 5, 6, 1, 3, 2, 7, 4 E) 2, 7, 6, 3, 1, 5, 6
Cranial nerves III (oculomotor), VII (facial), and IX (glossopharyngeal) supply the entire parasympathetic innervation of the head; however, only the preganglionic fibers lie within these three pairs of cranial nerves
Indicate whether the statement is true or false
Which describes the response of the voltage-gated channels when an axon is stimulated to threshold?
A. K+ channels open before the Na+ channels. B. K+ influx causes Na+ channels to inactivate. C. K+ channels open at the same time as the Na+ channels. D. K+ channels are opened when Na+ binds to the channel. E. Na+ channels are activated and then inactivated.