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45 Cards in this Set
- Front
- Back
is the structural unit of the nervous system.
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Neuron
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is the same as a neuron
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Nerve Cell
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Projections from the body of the nerve cell that carry nervous impulses.
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Nerve Fibers
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Connect with other neurons to recieve information
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Dendrites
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Conducts impulses away from the cell body
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Axon
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the junction where nerve signals jump from one nerve to another
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Synapse
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is a chemical that sends a nerve signal across a synapse.
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neurotransmitter
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carries impulses from sense organs to the brain.
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Sensory neurons
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carries nerve impulses from the brain to the effectors.
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Motor neurons
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carries impulses from one neuron to another
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interneuron
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are bundles of fibers held together by connective tissue that originate in the brain and spinal cord and distribute branches all over the body.
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nerves
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carry impulses toward the spinal cord and brain
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afferent nerves
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consists of the brain and spinal
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central nervous system
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is an acute inflammation of the pia mater and arachnoid mater around the brain and spinal cord
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meningitis
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is the outer layer of the meninges
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dura mater
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is the innermost layer of the meninges
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pia mater
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is the middle space of the meninges
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arachnoid mater
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flows through and around the brain and spinal cord to nourish and protect them
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cerebrospinal fluid
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consists of all the nerves that connect the CNS to the rest of the body
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peripheral nervous system
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regulates the action of glands, smooth muscles, and the heart.
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autonomic nervous system
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twelve pairs of nerves that emerge from the brain through openings in the base of the cranium.
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cranial nerves
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consists of the four upper cervical nerves that supply the skin and control the movement of the head, neck,and shoulders.
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cervical plexus
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is composed of four lower cervical nerves and the first pair of thoracic nerves that control arm movements
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brachial plexus
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is formed from the first four lumbar nerves
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lumbar plexus
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is formed from the fourth and fifth lumbar nerves and the first four sacral nerves
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sacral plexus
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is the largest and longest nerve in the body
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sciatic nerves
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is formed from a portion of the fourth sacral nervesl, the fifth sacral nerve, and coccygeal nerve
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coccygeal plexus
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regulates the action of glands, smooth muscles, and the heart
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autonomic nervous system
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supplies the glands, involuntary muscles of internal organs, and walls of blood vessels with nerves and prepares the body for energy- expanding circumstances.
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sympathetic nervous system
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functions to conserve energy and reverse the action of the sympathetic division.
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para-
sympathetic nervous system |
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is the route that a nerve impulse travels through the nervous system
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neurological pathway
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is the simplest form of nervous activity, which includes a sensory and motor nerve
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reflex
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is the nerve pathway of a reflex
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reflex arc
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record conscious sensations such as heat, cold, pain, and pressure throughout the body
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exteroceptors
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sense where the body is and how it moves
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proprioceptors
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sensory organs in muscles that detect the rate of stretch in muscle
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muscle spinal cells
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are multibranched sensory nerve endings located in tendons
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Golgi tendon organs
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occurs in young adults and results from break down of the myelin sheath
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multiple sclerosis
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occurs as a result of the degeneration of certain nerve tissues which regulate body movements
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parkinson's disease
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is paralysis of the arms and legs caused by a stroke or spinal cord injury
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quadriplegia
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paralysis of the lower extremeties; does not affect the arms or hands
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paraplegia
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light, brisk brushing using a dry vegetable bristle bath brush
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skin brushing
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is caused by a blood clot or ruptured blood vessel in or around the brain that subsequently destroys nerve tissue
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cerebrovascular accident
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is unilateral paralysis caused by a stroke
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hemiplegia
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is a neurological condition in which there is an abnormal electrical activity in the CNS without apparent tissue abnormalities
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epilepsy
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