first pharyngeal arch cartilage


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first pharyngeal arch cartilage

the cartilage in the mesenchyme of the first pharyngeal arch in the embryo from which the malleus and incus of the middle ear develop; its proximal end also gives rise to the sphenomandibular and anterior malleolar ligaments.
Synonym(s): Meckel cartilage (2)

man·dib·u·lar car·ti·lage

(man-dib'yū-lăr kahr'ti-lăj)
A cartilage bar in the first pharyngeal arch (mandibular arch) that forms a temporary supporting structure in the embryonic mandible; the cartilaginous primordia of the malleus and incus develop from its proximal end, and it also gives rise to the sphenomandibular and anterior malleolar ligaments.
Synonym(s): first pharyngeal arch cartilage, Meckel cartilage.