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29 Cards in this Set
- Front
- Back
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functions of nervous system |
coordinates all body, transmission of electrochemical signals from body parts to the brain and back to body parts, responsible for all behavior |
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central nervous system |
brain and spinal cord |
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peripheral nervous system |
all neural tissue outside of cans, cranial nerves, spinal nerves, ganglia, peripheral nerves, enteric plexuses, sensory receptors |
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divisions of the nervous system |
afferent division, centrral nervous system, efferent division |
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neurons |
excitable cells that transmit electric signals |
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neuroglia |
supporting cells |
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four types of cns neuroglia |
astrocytes, microglia, oligodendrocytes, ependymal cells |
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pns neuroglia |
satellite cells, schwann cells |
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astrocytes |
form blood brain barrier |
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microglia |
ovoid cells that assist injured neurons and remove debris |
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ependymal cells |
line central cavities of brain + spine, monitor and circulate csf |
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oligodendrocytes |
wrap cans nerve fibers |
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satellite cells |
surround cell bodies in pns, regulate environment |
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schwann cell |
surround nerves, help nerve regeneration |
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chars of neurons |
long lived, high metabolic rate, plasma membrane helps for cell-cell interactions and electrical signaling |
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neuron classification |
somatic and visceral afferent, efferent, interneurons |
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4 types of neurons |
anaxonic, bipolar, unipolar, multipolar |
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multiple sclerosis |
white blood cells attack schwann cells on neurons |
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fluoxetine |
helps with serotonin levels |
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acetylcholine |
muscle, exicittory |
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glutamate |
learning and memory |
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norepinephreine |
arousal, dreaming, and regulating mood, exitatory or inhibitory |
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dopamine |
excitatory, emotion and mood, parkion's |
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serotonin |
inhibitory, emotions, moods, and sleep |
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enkephalins |
relieves pain |
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gaba |
inhibitory, pain perception, valium |
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endorphins |
inhibitory, acts like opiates to block pain |
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nitric oxide |
vasodilation, memory and learning, widespread effects |
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