an·te·ri·or me·di·an fis·sure of me·dul·la ob·lon·ga·ta

[TA]

the longitudinal groove in the midline of the anterior aspect of the medulla oblongata; it is the medullary equivalent of the anterior median fissure of the spinal cord and ends at the foramen cecum posterius; its caudal part is obliterated by the decussation of the pyramids.

Synonym(s): fissura mediana anterior medullae oblongatae [TA], anteromedian groove (1)

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anterior median fissure of medulla oblongata

an·te·ri·or me·di·an fis·sure of me·dul·la ob·lon·ga·ta