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Stand
with your right shoulder, hip, and foot firmly against a wall. Raise your left foot from the floor without losing contact with the wall at any point. What happens? Why? What principle of this chapter
does this illustrate?
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If the spinal cord were severed at the C5 level, would the diaphragm be paralyzed? Why or why not?
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You
are dicing raw onions while preparing dinner, and your eyes are watering profusely.
Describe the afferent and efferent neural pathways involved in this reflex.
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- Which cranial nerves convey pain signals to
the brain when (a) sand blows into your eye, (b) you bite the rear of your
tongue, and (c) your stomach hurts from eating too much?
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When a patient needs a tendon graft, surgeons sometimes use the tendon of the palmaris longus, a relatively dispensible muscle of the forearm. The median nerve lies nearby and looks very similar to this tendon. There have been cases where a surgeon mistakenly removed a section of this nerve instead of the tendon. What effects do you think such a mistake would have on the patient?
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