special visceral efferent column

spe·cial vis·cer·al efferent col·umn

, splanchnic efferent columna column of gray matter (substance) in the hindbrain of the embryo, represented in the adult by the trigeminal and facial nuclei and the nucleus ambiguus. [Use of branchial is a misnomer in human anatomy.] Synonym(s): branchial efferent column