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45 Cards in this Set

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