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.
Ontology:	Cell Ontology [CL:0000741]