Quain's elements of anatomy . nd or hyoid visceral arch is originally closely united withthe first arch at its cranial extremity below the auditory capsule. Itcontains in its proximal part the cartilaginous matrix of the incus,which becomes aiticulated with the head of the malleus formed in theadjacent proximal part of the mandibular arch. The remainder of thiscartilaginous bar forms the tympano-hyal and styloid processes, the stylo-hyoid ligament, and the lesser wings of the hyoid bone (cerato-hyal). The third visceral arch or thyio-hyoid gives rise, by its cartilaginousmatrix, to the great w
Quain's elements of anatomy . nd or hyoid visceral arch is originally closely united withthe first arch at its cranial extremity below the auditory capsule. Itcontains in its proximal part the cartilaginous matrix of the incus,which becomes aiticulated with the head of the malleus formed in theadjacent proximal part of the mandibular arch. The remainder of thiscartilaginous bar forms the tympano-hyal and styloid processes, the stylo-hyoid ligament, and the lesser wings of the hyoid bone (cerato-hyal). The third visceral arch or thyio-hyoid gives rise, by its cartilaginousmatrix, to the great wings and body of the hyoid bone. It supports the•rudiment of the thyroid cartilage, and is closely connected with thedevelopment of the larynx. The fourth and fifth arches, as already remarked, may be considered as belonging to the neck rather than to the head. The congenital fissures of the neck which have been observed as a malformation, and which usually open externally far down in that region, may be due ta VOL. II. 3 a. 818 FRAMEWOEK OF THE BODY.
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