A more probable view is that it develops from rests derived from the first branchial arch an not from the parotid.
Between each of these and behind the last one there is a thickening of the mesoblast which gives rise to a branchial arch.
The hyoid is united with the first branchial arch, but has no attachment to the cranium.
Behind the mandibular arch are present a well-developed hyoid (hy) and a first branchial arch (not shewn in fig. 146).
The first branchial arch is well developed, the hyoid arch but slightly.
The main branch of the nerve passes ventralwards, and supplies the first branchial arch (fig. 271 gl).
The anterior cornu or free part of the first branchial arch is much the largest of the three structures.
In Aves the cornu formed from the first branchial arch (fig. 331, cbr) is always larger than that of the true hyoid arch (ch).
This biserial archipterygium with its limb-girdle is derived from a series of gill-rays attached to a branchial arch.
branchial arch n.
Any of usually six embryonic arches that give rise to specialized structures in the head and neck in the higher vertebrates. Also called gill arch, pharyngeal arch, visceral arch.