PSYCH 2 Lecture Notes - Lecture 4: Central Nervous System, Somatic Nervous System, Parasympathetic Nervous System
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Motor (efferent) neurons: (cid:272)arry i(cid:374)stru(cid:272)tio(cid:374)s fro(cid:373) (cid:272)e(cid:374)tral (cid:374)er(cid:448)ous syste(cid:373) out to (cid:271)ody(cid:859)s muscles and glands. Glial cells: support, nourish, and protect neurons -- they may also play a role in learning, thinking, and memory. (cid:374)er(cid:448)ous syste(cid:373): (cid:271)ody(cid:859)s speedy (cid:272)o(cid:373)(cid:373)u(cid:374)i(cid:272)atio(cid:374) (cid:374)et(cid:449)ork, (cid:272)o(cid:374)sisti(cid:374)g of all the (cid:374)er(cid:448)e (cid:272)ells of: Peripheral nervous system (pns) sensory and motor neurons connecting the central nervous system (cns) to the rest of the body gathers and transmits information. The nervous system spinal cord: a two-way information highway connecting the pns to the brain ascending neural fibers send up sensory information. Descending fibers send back motor control information reflexes: simple, automatic responses to stimuli controlled by neural pathway. Pet (positron emission tomography) scan: detects where a radioactive form of glucose goes while the brain performs a given task. Where glucose is being metabolized in the brain is the part the brain is using.
