| 释义 |
pontomedullary groove pon·to·med·ul·lar·y grooveSYN medullopontine sulcus [TA].pon·to·med·ul·lar·y groove (pon'to-med'ŭ-lar-ē grūv) The transverse groove on the ventral aspect of the brainstem that demarcates the pons from the medulla oblongata; from its bottom the sixth, seventh, and eighth cranial nerves emerge. |