Mathematics. the identity element of a group in which the operation is addition. (of a function, especially of a function of a complex variable) a point at which a given function, usually a function of a complex variable, has the value zero; a root.
Mucosa buccalis. The inner lining of the cheeks and lips, which is an anatomic region that includes all the mucous membrane lining of the inner surface of the cheeks and lips, from the line of contact of the opposing lips to the line of attachment of mucosa to the alveolar ridges and pterygomandibular raphe, which occupies an area of 50â60 cm2.
Wall of the Digestive Tract â¢4 basic layers â¢Mucosa â¢Submucosa â¢Muscularis â¢Serosa 10 Copyright Â© 2009 Pearson Education Inc. Wall of the Digestive Tract Figure 15.2 The mucosa is a mucous membrane that lines the GI tract and secretes mucus that lubricates and protects the GI tract. The muscularisis made up of two layers of smooth