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22 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Central nervous system |
Brain and spinal cord |
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Peripheral nervous system |
Cranial nerves, spinal nerves, ganglia |
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Sensory (afferent) |
Receives sensory info (input) from receptors and transmits info to CNS |
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Motor (efferent) |
Transmits motor impulses (output) from CNS to muscles or glands |
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Proprioception |
Knowledge of where you are |
Close eyes and know arm is bent |
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Nerve cell types |
Neurons, glial cells |
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Cell body (soma) |
Control center receiving, integrating, and sends impulses |
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Axon |
Transmits impulses away from Soma |
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Axon hillock |
Triangular region where Soma and axon connect |
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Telodendria |
Terminal extensions where there are synaptic knobs |
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Nissl bodies |
Darkly staining area made up of free ribosomes |
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Interneurons |
Nerves within the CNS between the input and output |
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Glial cells |
Cells within the CNS and pns that protect and support neuron |
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Astrocytes (glial cell) |
Cells within the CNS that help form the blood-brain barrier |
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Ependymal (glial) |
Cells within the CNS that produce cerebrospinal fluid |
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Microglia (glial) |
Cells that perform phagocyte activity |
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Oligodendrocytes (glial) |
Cells within the CNS that create myelin sheath wrapping around the neuron |
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Myelination |
Schwann cells within the pns that protect; axons are wrapped with a myelin sheath |
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Myelinated |
Nerve impulse jumps from node to node(more efficient) |
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Unmyelinated |
No node so must travel the entire length of Axon |
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Regeneration of pns axons |
Vulnerable to cuts, damaged axon can regenerate |
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CNS axons cannot regenerate |
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