| Term Name: | spinal accessory motor neuron |
|---|---|
| Synonyms: | SACMN |
| Definition: | A motor neuron that is located in the cervical region of the spinal cord and selectively innervates the sternocleidmastoid or trapezius muscle. Unlike other motor neurons, they extend axons dorsally along lateral margins of the spinal cord. |
| Appears at: | Unknown |
| Evident until: | Adult (90d-730d, breeding adult) |
| Ontology: | Anatomy Ontology [ZFA:0009311] |
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