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Axon Initial Segment MeSH Descriptor Data 2023


MeSH Heading
Axon Initial Segment
Tree Number(s)
A08.675.542.145.250
A11.284.180.075.125
A11.671.501.145.250
Unique ID
D000071040
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D000071040
Scope Note
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.
Entry Term(s)
Axon Hillock
Axon Initial Segments
Axonal Trigger Zone
Previous Indexing
Axons (1973-2016)
Public MeSH Note
2017
History Note
2017
Date Established
2017/01/01
Date of Entry
2016/06/29
Revision Date
2022/07/08
Axon Initial Segment Preferred
Axonal Trigger Zone Broader
Axon Hillock Related
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