Axon Initial Segment
First segment of axon that connects distal axon segments to the neuronal CELL BODY at the axon hillock region. The axon initial segment is not protected by the MYELIN SHEATH and has properties critical for axonal growth. The axon initial segment and the axon hillock form an axonal trigger zone.
Year introduced: 2017
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Subheadings:
Tree Number(s): A08.675.542.145.250, A11.284.180.075.125, A11.671.501.145.250
MeSH Unique ID: D000071040
Entry Terms:
- Axon Initial Segments
- Axon Hillock
- Axon Hillocks
- Axonal Trigger Zone
- Axonal Trigger Zones
- Trigger Zone, Axonal
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