Mandibular Arch

(redirected from First pharyngeal arch)
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Related to First pharyngeal arch: second pharyngeal arch, First branchial arch

mandibular arch

[man′dib·yə·lər ′ärch]
The first visceral arch in vertebrates.

Mandibular Arch


a supporting element of the visceral skeleton in gnathostomatous vertebrates, including humans. The mandibular arch is situated directly in front of the sublingual arch. In the course of evolution, the mandibular arch differentiated into the primary upper jaw (palatoquadrate cartilage) and primary lower jaw (Meckel’s cartilage).

References in periodicals archive ?
The muscle structures derived from the first pharyngeal arch, such as the anterior belly of the digastric muscle, originate from the original mesoderm of the arch (Moore & Persaud).