Term
| central nervous system (CNS) |
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Definition
| brain and spinal cord (physical division) |
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Term
| peripheral nervous system (PNS) |
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Definition
| 12 pairs of cranial nerves and 31 pairs of spinal nerves w/ their associated ganglia (physical division) |
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Term
| autonomic nervous system (ANS) |
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Definition
| controls involuntary actions (functional division) |
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Term
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Definition
| convey information of sensations |
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Definition
| cause movement/ contractions |
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Definition
| controls voluntary processes (functional division) |
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Definition
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Definition
| acts on locations throughout the body |
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Definition
| acts on a specific location in the body |
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Definition
| part of nervous system that converts external stimuli into internal stimuli, transmit to CNS for interpretation |
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Term
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Definition
| innervates the skin; receives external inputs (touch, etc.) |
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Definition
| carry impulses to the central nervous system; bundles of fibers in the posterior root |
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Definition
| bundles of fibers in the anterior root that carry nerve impulses away from the body |
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Term
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Definition
| in the ANS, fibers from CNS to ganglia |
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Term
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Definition
| in the ANS, fibers from ganglia to effector organ |
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Term
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Definition
| efferent motor root of spinal cord; bundles of nerve fibers on the ventral (anterior) side of spinal cord carrying nerve impulses away from the CNS |
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Term
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Definition
| afferent motor root of spinal cord; bundles of nerve fibers on the dorsal (posterior) side of the spinal cord carrying nerve impulses to the CNS |
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Term
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Definition
| mass of nerve cell bodies |
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Term
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Definition
| site where two neurons come into close proximity but do not connect |
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Definition
| primary source of innervation for the back |
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Term
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Definition
| primary source of innervation for most of the body (except head, neck, back) |
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Term
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Definition
| part of the PNS, typically a mixed nerve |
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Term
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Definition
| part of the autonomic nervous system that prepares the body for an emergency (raise heart rate/ blood pressure, blood redistribution, inhibits intestinal peristalsis, closes sphincters) |
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Term
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Definition
| part of the autonomic nervous system that “aims at” conserving/restoring energy (slows heart rate, increases intestinal peristalsis/ glandular activity, opens sphincters) |
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Term
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Definition
| contains both sensory and motor nerve fibers i.e. spinal nerves |
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Definition
| area of skin supplied by a single spinal nerve, therefore a single segment of the spinal cord |
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Definition
| when an area of the body is innervated by a single segment of the spinal cord (i.e. dermatome) |
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Definition
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Definition
| dorsal root ganglion; mass of afferent cell bodies (sensory) |
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Definition
| a complex bundle of anterior rami at the root of limbs |
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Term
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Definition
| the nerve pathway involved in a reflex action |
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Term
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Definition
| a mixed nerve branch of the spinal nerve that has emerged from the intervertebral foramen |
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Definition
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Definition
| nerves which innervate veins and arteries |
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Definition
| nerves which innervate the mucosa or body cavity lining |
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Term
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Definition
| supplies the vertebrae and coverings of the spinal cord (meninges) |
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Term
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Definition
| responds to external stimuli and transmits a signal to a sensory nerve |
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Term
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Definition
| a nerve fiber that stimulates contraction or secretion in response to stimuli |
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Definition
| innervates the viscera (internal organs, primarily the digestive system) |
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Term
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Definition
| short processes of the nerve cell body; conducts TO cell body |
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Term
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Definition
| branches of the thoracic spinal nerves associated with the sympathetic nervous system |
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Term
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Definition
| paired bundle of nerve fibers that run from the base of the skull to the coccyx and allows nerve fibers to travel to spinal nerves superior and inferior to their origin |
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Term
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Definition
| the longest process of the nerve cell body; conducts AWAY FROM cell body |
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Term
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Definition
| sensory receptor that detects the motion or position of the body by responding to stimuli within the organism |
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Term
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Definition
| sensory receptor that responds to pain of several modalities |
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Definition
| specialized supportive tissue in the nervous system |
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Term
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Definition
| nerve cell + all its processes (dendrites + axon) |
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Term
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Definition
| nerve cells (body) embedded in neuroglia |
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Term
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Definition
| nerve fibers (axons) embedded in neuroglia |
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