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24 Cards in this Set
- Front
- Back
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an extensive network of specialized cells that carries information to an from all parts of the body |
The Nervous System |
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Pathway connectingthe brain & peripheral nervous system |
Spinal Cord |
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Transmits info to & from the CNS |
Peripheral Nervous System |
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Carries sensory info & controls movement of the skeletal muscles |
Somatic Nervous System |
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Regulates glands, organs, blood vessels, digestion & blood pressure |
Autonomic Nervous System |
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The Brain & Spinal Cord |
Central Nervous System |
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Interprets & stores info& sends orders tomuscle glands & organs |
Brain |
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Maintains body functions & saves energy |
Parasympathetic Division |
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Prepares the body to react & expend energy in times of stress |
Sympathetic Division |
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specialized cell in the nervous system that sends and receives messages |
Neuron |
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parts of the neuron that receive messages from other cells |
Dendrites |
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the cell body of the neuron responsible for keeping the cell alive & functioning |
Soma |
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tubelike structures that carries messages to other cells |
Axon |
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fatty substance that coats the axons of neurons to insulate, protect, and speed up the neural impulse |
Myelin sheath |
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bundles of axons coated in myelin that travel together in the body |
Nerves |
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branches at the end of the axon |
Axon terminals |
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rounded areas on the end of the axon terminals |
Synaptic knob |
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saclike structures found inside the synaptic knob |
Synaptic vessels |
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chemical found in the synaptic vessel that when released has an effect on the next cell |
Neurotransmitter |
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Microscopic fluid filled space between the synaptic knob of one cell and the surface of the next |
Synapse (synaptic gap) |
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holes in the surface of the dendrites which are shaped to only fit certain neurotransmitters |
Receptor sites |
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neurotransmitter associated with sleep, mood and appetite |
serotonin |
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neurotransmitter associated with movement and sensations of pleasure |
dopamine |
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neurotransmitter associated with pain relief in the body |
endorphin |
