accessory nucleus

noun

1

: spinal accessory nucleus

The accessory nucleus is located at spinal levels C1 to about C5/C6 in the lateral portion of the anterior horn.

—Duane E. Haines, Lippincott's Illustrated Q&A Review of Neuroscience

2

: accessory olivary nucleus

Forelimb stimulation also activated contralateral sites in the dorsal accessory nucleus of the inferior olive …

—E. M. Santori et al., Journal of Neuroscience