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15 Cards in this Set

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Consists of the brain and spinal cord.
Central nervous system
Consists of nerves, ganglia, and plexuses; located outside the central nervous system.
Peripheral nervous system
PNS subdivision; action potentials go from sensory receptors to the central nervous system .
Sensory (afferent) division
PNS subdivision; action potentials go from the central nervous system to effector organs, such as muscles and glands.
Motor (efferent) division
Part of the motor division that conducts action potentials from the central nervous system to skeletal muscle.
Somatic nervous system
Part of the motor division that conducts action potentials from the central nervous system to smooth muscle, cardiac muscle, and glands.
Automatic nervous system
Automatic division; prepares the body for physical activity (fight or flight).
Sympathetic division
Automatic division; regulates resting or vegetative functions.
Parasympathetic division
Consists of plexuses within the wall of the digestive tract.
Enteric nervous system
Major site for processing information, initiating responses, and integrating mental processes.
Central nervous system
Bundles of axons and their sheaths that connect the CNS to sensory receptors, muscles, and glands.
Nerves
Number of cranial nerve pairs in the PNS.
12
Number of spinal nerve pairs in the PNS.
31
Collections of nerve cell bodies outside the CNS.
Ganglia
Extensive network of axons - and, in some cases neuron cell bodies - located outside the CNS.
Plexus