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a pair of endocrine glands above the kidneys that secretes hormones to help arouse the body in times of stress
autonomic nervous system
the part of the peripheral nervous system that controls the glands and the muscles of the internal organs
the extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscles or glands
the intricate fabric of interconnected neural cells that covers the cerebral hemisphere; the body's ultimate control and information processing center
the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body
the large band of neural fibers connecting the two brain hemispheres and carrying messages between them
the body's "slow" chemical communication system; a set of glands that secrete hormones into the bloodstream
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