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Neuron Anatomy
For BIO 201 Lab
Term | Definition |
---|---|
Cell Body/Soma | The cell body of the neuron |
Axon | Long slender projection of a neuron, where outgoing signals are sent |
Dendrite | Branched projections that extend from the neurosoma that receive signals |
Nucleus | Contains the DNA of the neuron, located within the soma |
Myelin Sheath | Fatty sheaths around the axon that insulate the axon and speed up transmission |
Schwann Cell | Glial cell in the PNS that creates the myelin sheath |
Nodes of Ranvier | Gaps in the myelin sheath |
Axon Hillock | Portion of the cell body that connects the soma to the axon |
Nissl's Body | Granular structures that consists of the Rough ER |
Neurilemma | Outer layer of the myelin sheath |
Endoneurium | Connective tissue that covers the myelin sheath. |
Synaptic Knob (terminal) | End of the axon that bulges out, releases synaptic vesicles that contain neurotransmitters that sends signals to other neurons or cells |