According to Poiseuille's law, a small decrease in the diameter of a vessel will
A. dramatically increase blood flow.
B. not affect blood flow.
C. slightly increase blood flow.
D. dramatically decrease blood flow.
E. slightly decrease blood flow.
Answer: D
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A. hyperopia B. myopia C. presbyopia D. amblyopia
During an isometric twitch in a skeletal muscle
A. the whole muscle shortens. B. tension generated by the muscle always exceeds the load on the muscle. C. H zones shorten. D. sarcomeres do not significantly shorten. E. tetanus occurs.
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Answer the following statement true (T) or false (F)
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A. stimulate ?-2 receptors and cause an increase in heart rate and dilation of bronchioles B. activate the parasympathetic division and allow for normal digestive system activities C. inhibit uptake of dopamine and cause depression D. block ACh receptors on skeletal muscle and cause flaccid paralysis E. decrease the amount of NE destroyed and may be used as an antidepressant