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The Nervous System, Jessie Lopez, Period 2 (Major part of the brain and
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The Nervous System, Jessie Lopez, Period 2
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Spaces &
Ventricles
Perivascular Spaces, pineal lined interstitial fluid dilled spaces in brain surrounding perforating vessels
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Fopurth Ventricle, lies at the base pf the brain
Third Ventricle;, lies in the diencephalon
Interventricular foramen, connects third ventricle to lateral ventricles
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Action Potential
short lasting event electrical; membrane of cell rises and falls, consistent trajectory, wave that r fown axojnpoof neuron from axon terminal,/
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Spinal Nerves
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fusing forming a complicated pattern of fibers, nerve plexus
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*Coverings of the Brain
Middle layer, Arachnoid Mater
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Outer most layer, Dura Mater
Neurotransmitters
chemical messenger moving across the synapse form one neuron to the nest influences a neuron will generate and action potential
dopamine= movement, thoughts, and rewarding sensation
serotonin= emotional states, sleep, and sensory pereception
norepinephrine= physical arousal, learning, memory, regulation of sleep
GABA= brain activity, disorders
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endorphins= pain perception and emotions, addiction and disorders
reflex arc
sensory nerves cells receive stimulation, connects other nerve cells that activate muscle cells, performing reflex actions.
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