Medical Dictionary

spinal accessory nucleus

noun

medical Definition of spinal accessory nucleus

:a cluster of motor neurons in the ventral horn of the cervical region of the spinal cord that give rise to the accessory nerve
  • The spinal accessory nerve contains axons of motor neurons whose cell bodies are located in the spinal accessory nucleus
  • —John H. MartinNeuroanatomy: Text and Atlas2003

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