choana

  • 61pterygoid plate — n either of two vertical plates making up a pterygoid process of the sphenoid bone: a) a broad thin plate that forms the lateral part of the pterygoid process and gives attachment to the lateral pterygoid muscle on its lateral surface and to the… …

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  • 62apertura nasalis posterior — TA alternative for choana (def. 2) …

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  • 63choanal 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 …

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  • 64crista choanalis vomeris — [TA] vomerine crest of choana: the concave crest on the posterior surface of the vomer, forming the medial border that separates the two choanae …

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  • 65posterior nares — the paired choanae; see choana (def. 2) …

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  • 66proboscis lateralis — a rare congenital deformity marked by absence of the medial and lateral nasal processes and the globular processes; on the affected side, the nasal cavity, choana, and nasal bones are absent and there is a tubular appendage (proboscis) above the… …

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  • 67choanate — I. ˌnāt adjective Etymology: choan + ate : having a choana; specifically : having internal nares compare choanichthyes II. noun ( s) : a choanate fish : one of the Choanichthyes …

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