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