the nervous system

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Last updated 6:54 PM on 1/18/23
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40 Terms

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central nervous system
consists of brain + spinal cord
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peripheral nervous system
consists of cranial + spinal nerves
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autonomic nervous system
involuntary muscle control
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somatic nervous system
voluntary muscle control
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nerve impulse
electrical signal that travels along a neuron
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negatively
a neuron’s intracellular space is charged -
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positively
a neuron’s extracellular space is charged -
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sodium, action potential
_____ rushes to neuron when stimulated, reversing the charge. This is called -
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potassium, repolarization
as an impulse passes, _____ diffuses the neuron, this is called,
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synapse
where two neurons meet, they don’t touch there
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synaptic cleft
spaces between neurons
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neurotransmitters
stimulated vesicles release ____ across the synaptic cleft
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channels
neurotransmitters cause ____ to open in the next neuron
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four ventricles
How many ventricles are there
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CSF
what is constantly being produced, circulated, and reabsorbed?
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dura meter
thick, tough layer of meniges
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arachnoid membrane
thin, cobweb like layer of meniges
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pia mater
thin layer containing blood vessels of meniges
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connective tissue
three layers of meniges are made of
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cerebrosinal fluid
_____ is between the pia mater and arachnoid layer
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cerebral cortex
gray matter
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cerebral medulla
white matter
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basal nuclei
islands of gray matter
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lobes
the cerebrum is divided into four ______
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parietal lobe
controls sensations (pain, temp, touch)
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occipital lobe
controls visual processing
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temporal lobes
controls memory, pronunciation
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frontal lobe
controls voluntary movements
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hypothalmus
responsible for autonomic processes, controls horomones, part of limbic system
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cerebrum and spinal cord
the brain stem is located between the
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cerebellum
second largest part of the brain
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meninges
spinal cord is covered by _____
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62 spinal nerves
62 spinal nerves
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white and gray matter
spinal cord butterfly is made of _____ and _____
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dorsal horns
______ recieve impulses from afferent nerveres to pass to the efferent nerves.
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sympathetic division
used in emergency situations
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parasympathetic
reduces sympathetic response
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peripheral nervous system
comprised of all nerves not in brain or spinal cord
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autonomic nervous system
involuntary muscle control
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somatic nervous system
voluntary muscle control