Fourth Arch. The vascular derivatives of the fourth pharyngeal arch differ between the left and right: Right – proximal portion of the subclavian artery; Left – aortic arch; The fourth arch gives rise to laryngeal cartilages – namely the thyroid, corniculate and cuneiform cartilages.

Key Words: Craniofacial development, Face and neck anatomy, Pharyngeal arches, Pharyngeal arches derivatives. EMBRYOLOGY, MIGRATION, AND DEVELOPMENT. Development of the pharyngeal arches occurs during the third and fourth weeks of embryonic gestation.

By differential growth the neck elongates and new arches form, so the pharynx has six arches ultimately. Each pharyngeal arch has a cartilaginous stick, a muscle component that differentiates from the cartilaginous tissue, an artery, and a cranial nerve. Each of these is surrounded by mesenchyme. Arches do not develop simultaneously but instead ...

The trigeminal nerve (CN V; maxillary and mandibular branches) supplies derivatives of the first pharyngeal arch. Branches from this nerve give sensory supply to the head and neck, including the facial skin, teeth, mucous membranes of the nasal cavities, palate, mouth and tongue.