Mandibular Arch

(redirected from First pharyngeal arch)
Also found in: Dictionary, Medical.
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 ?
Vascular disruption of Stapedial artery, which supplies the first pharyngeal arch, may be responsible for this defect.
These 3 swellings develop from the first pharyngeal arch. Another median swelling, the copula or hypobranchial eminence is formed by the mesoderm of second and third part of the fourth arch.

Full browser ?