Flashcards in Unit 4 - Head and Neck: Oral Cavity (Ex. III) Deck (9)
tongue and muscular floor
What frames the mouth and surrounds the oral fissure?
- orbicularis oris
- S and I labial muscles
What is the philtrum?
external midline depression on upper lip that extends S to the nasal septum
What are the labial frenula?
midline folds of mucous membrane that attach inner surfaces of upper and lower lips to the gums