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Central Nervous System (drugs that affect the brain (cocaine (increase…
Central Nervous System
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Action potential
strong enough stimulation or nerve impulse causes Na+ gates to open Na+ rush into cell causing depolarization
if a strong enough depolarization occurs, threshold potential is reached and impulse is sent down axon
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K+ rush out of neuron after Na+ rush in which causes a depolarization of the membrane back to resting potential
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spaces and ventricles
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subarachnoid space
build filled area between dura and subarachnoid makers, area between arachnoid and pia mater
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Tissue
CNS
oligodendrocyte
most common, form the myelin for neurons of CNS
microglia
small, have fewer processes and are phagocytes that protect the CNS by phagocytizing microbes and clearing away debris from inflammation and tissue damage
Astrocytes
star shaped cell with many processes that holds neurons close to blood vessels and help form blood brain barrier
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diseases of the brain
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Basal ganglia
group of physical dysfunctions that occur when the group of nuclei in the brain known as the basal ganglia fail to properly suppress unwanted movements or to properly prime upper motor neuron circuits to initiate motor function.
Cerebral hypoxia
when the brain is completely deprived of oxygen, it is called cerebral anoxia.
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Encephalopathy
general term that means brain disease, damage, or malfunction.