bucconasal membrane

bucconasal membrane
oronasal m.

Medical dictionary. 2011.

См. также в других словарях:

  • membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m …   Medical dictionary

  • oronasal membrane — a thin epithelial plate separating the nasal pits from the oral cavity of the embryo. Called also bucconasal m …   Medical dictionary

  • Atresia — Absence of a normal opening or failure of a structure to be tubular. Atresia can affect many structures in the body, including: {{}}Anal atresia congenital absence of a hole at the bottom end of the intestine. Also called imperforate anus. Aortic …   Medical dictionary

  • choanal atresia — congenital bony or membranous occlusion of one or both choanae, due to failure of the embryonic bucconasal membrane to rupture. Cf. atretorrhinia. Unilateral right sided choanal atresia in a child with chronic nasal discharge. Axial CT scan shows …   Medical dictionary

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