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Descriptor English: Axon Initial Segment
Descriptor Spanish: Segmento Inicial del Axón
Descriptor segmento inicial del axón
Entry term(s) cono axonal
zona de activación axonal
Scope note: Primer segmento del axón que conecta los segmentos distales axonales con el CUERPO CELULAR de la neurona en la región del cono axonal. El segmento inicial del axón no se encuentra protegido por la VAINA DE MIELINA y tiene propiedades críticas para el crecimiento axonal. El segmento inicial del axón y el cono axonal forman una zona activadora axonal.
Descriptor Portuguese: Segmento Inicial do Axônio
Descriptor French: Segment initial de l'axone
Entry term(s): Axon Hillock
Axon Hillocks
Axon Initial Segments
Axonal Trigger Zone
Axonal Trigger Zones
Trigger Zone, Axonal
Tree number(s): A08.675.542.145.250
A11.284.180.075.125
A11.671.137.170
A11.671.501.145.250
RDF Unique Identifier: https://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.
Allowable Qualifiers: CH chemistry
CL classification
DE drug effects
EN enzymology
IM immunology
ME metabolism
MI microbiology
PA pathology
PH physiology
PS parasitology
RE radiation effects
TR transplantation
UL ultrastructure
VI virology
Previous Indexing: Axons (1973-2016)
Public MeSH Note: 2017
History Note: 2017
DeCS ID: 56260
Unique ID: D000071040
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 2017/01/01
Date of Entry: 2016/06/29
Revision Date: 2016/02/26
Axon Initial Segment - Preferred
Concept UI M000612953
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.
Preferred term Axon Initial Segment
Entry term(s) Axon Initial Segments
Axonal Trigger Zone - Broader
Concept UI M000612957
Preferred term Axonal Trigger Zone
Entry term(s) Axonal Trigger Zones
Trigger Zone, Axonal
Axon Hillock - Related but not broader or narrower
Concept UI M000612956
Preferred term Axon Hillock
Entry term(s) Axon Hillocks



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