Ventral view of the palate, gum, lip, and nose. A. Normal. B. Unilateral cleft lip extending into the nose. C. Unilateral cleft involving the lip and jaw and extending to the incisive foramen. D. Bilateral cleft involving the lip and jaw. E. Isolated cleft palate. F. Cleft palate combined with unilateral anterior cleft lip.
Credit: Sadler T, PhD. Langman's Medical Embryology, Ninth Edition Image Bank. Baltimore: Lippincott Williams & Wilkins, 2003.