The half-life of a hormone is
A. one-half of the time it takes to synthesize the chemical messenger molecule.
B. the time necessary to reduce the hormone concentration in the blood to half of what had been secreted.
C. half the time until the hormone molecule dissolves.
D. half of the duration of the hormone's effects on its target cells throughout the body.
B
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The thoracic cage consists of 12 pairs of elastic arches of bone called ribs.
Answer the following statement true (T) or false (F)
Energy in the human body takes on all of the following forms except:
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What three functional roles in a movement are used to characterize muscle groups? Give a brief description of each action
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The preganglionic axons of CN VII extend to the
A. pterygopalatine ganglion. B. submandibular ganglion. C. otic ganglion. D. pterygopalatine, submandibular, and otic ganglia. E. pterygopalatine and submandibular ganglia.