The first pharyngeal arch has both a maxillary and a mandibular prominence. Dorsal to the first arch is an elevation formed by the underlying trigeminal ganglion, the sensory ganglion for the nerve that supplies tissues derived from the first arch.

                     Species: Mouse 
                     Day Gestation: 10 
             Approx. Human Age: 29 days 
                                   View: Lateral 
                Pharyngeal Arches
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