MeSH definition : 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.;
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.