Cocaine blocks the binding of dopamine at postsynaptic membranes
Indicate whether the statement is true or false
F
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In its protective role, the blood-brain barrier becomes an obstacle in delivering therapeutic drugs to specific regions of the brain in the treatment of a variety of brain disorders
Describe what the blood-brain barrier is made of, and how different compounds are capable of crossing it.
Which of the following would cause the crossbridge to transition from a high force state to a low force state?
A) decreasing myosin ATPase activity B) increasing intracellular calcium C) increasing myosin ATPase activity D) energizing the myosin head E) decreasing intracellular calcium
During the absorptive state, __________.
A) adipocytes contribute fatty acids to the circulation. B) skeletal muscles break down glycogen. C) glucagon levels are elevated. D) the liver forms glycogen. E) All of these answers are correct.
Which statement characterizes sympathetic activity?
a. blood vessels with alpha receptors dilate. b. the bronchioles constrict. c. the pupils of the eye dilate. d. the secretion of the sweat glands is inhibited. e. the urinary bladder contracts and eliminates urine.