visceral arches

pharyngeal arches

1. obliquely disposed, rounded ridges on either side of the head and neck of human embryos during the fourth and fifth gestational weeks, which contribute to formation of the face and neck. 2. aggregate of the pharyngeal arches, pouches, grooves, and membranes seen in the developing embryo of vertebrates. Synonym(s): branchial apparatus, pharyngeal apparatus, visceral arches

visceral arches

the skeletal structures lying between adjacent gill slits in vertebrates, or the division between the gill slits.

Visceral arches

visceral arches

pharyngeal arches

visceral arches