hyoid arch

Two parts of the hyoid arch: the styloid process.

In amphibians and reptiles, the hyoid arch is modified for similar reasons.

The two most anterior pharyngeal arches are thought to have become the jaw itself and the hyoid arch, respectively.

The facial nerve is developmentally derived from the hyoid arch (second pharyngeal branchial arch).

There is no attachment between the hyomandibular and the quadrate, and instead the hyoid arch suspends the two sets of jaws like pendulums.

Like the stapedius, all of these muscles derive from the hyoid arch and are innervated by cranial nerve VII.

The second pharyngeal arch or hyoid arch (or second branchial arch) assists in forming the side and front of the neck.

The idea stems from the belief that in gnathostomes the mandibular arch is a serial homologue of the hyoid arch and the more posterior gill arches.

This sinus is bounded in front by the hyoid arch, and behind by the thoracic wall; it is ultimately obliterated by the fusion of its walls.

The hyoid bone is derived from the lower half of the second gill arch in fish, which separates the first gill slit from the spiracle, and is often referred to as the hyoid arch.

The secret of the speed of pivot feeding is in a locking mechanism, in which the hyoid arch is folded under the head and is aligned with the urohyal which connects to the shoulder girdle.

In the species that have cartilage in the sublingua or lytta, that cartilage is not derived from the hyoid bone or hyoid arch (the bone and cartilage that supports the tongue).

The mandibular and hyoid arches grow more rapidly than those behind them, with the result that the latter become, to a certain extent, telescoped within the former, and a deep depression, the cervical sinus, is formed on either side of the neck.

Like Erik Jarvik, he has argued that the three ear ossicles of mammals can be derived from components of the hyoid branchial arch of osteolepiforms rather than from both the mandibular and hyoid arches as claimed by the Reichert-Gaupp theory.

The styloid process is developed from the proximal part of the cartilage of the second branchial or hyoid arch by two centers: one for the proximal part, the tympanohyal, appears before birth; the other, comprising the rest of the process, is named the stylohyal, and does not appear until after birth.