ABSTRACT
This chapter begins with the mouth and pharyngeal arches, and discusses the development of the face and its features. It explains the origin of the mouth, and discusses the development of the pharynx. A study of the face is a good foundation for consideration of the five senses because the eyes, ears, nose, and tongue are features associated with the face. The mouth arises from the stomodeum, an inpocketing of ectoderm on the ventral side of the embryo's head. The chapter explores the origins of the hard palate, soft palate, and cleft palate, deals with the forebrain, and discusses the origin of the eyes, including the role of embryonic induction. The pharynx is the anterior-most portion of the foregut and is therefore lined by endoderm. The chapter also discusses the origin of the ears, including inner, middle, and outer ears and the origins of the senses of smell, taste, and touch.
