What are pharyngeal arches and their significance?
Pharyngeal arches are a series of tissue bands that form along the lateral sides of the head and neck region of the embryo. Each arch contains a core of mesenchymal tissue, surrounded by an outer layer of ectoderm and an inner layer of endoderm. These arches give rise to various craniofacial structures, including the jaws, ears, and neck. The first pharyngeal arch, also known as the mandibular arch, is particularly important for the development of the lower face and jaw.
