AND PHYSIOLOGY. 115 



Fig. 132. 



A Front View of the Superficial Layer of Muscles on the Face and Neck. 1, 1, Ante- 

 rior Bellies of the Occipito-Frontalis. 2, Orbicularis or Sphincter Palpebrarum. 8, Na* 

 sal Slip of Occipito-Frontalis. 4 Anterior Auricula}. 5, Compressor Naris. 6, Levator 

 Labii Superioris Aheque Nasi. 7, Levator Anguli Oris. 8, Zygomaticus Minor. 9, 

 Zygomaticus Major. 10, Masseter. 11, Depressor Labii Superioris Alajque Nasi. 12, 

 Buccinator. 13, Orbicularis Oris. 14, The denuded Surface of the Inferior Maxillary 

 Bone. 15, Depressor Anguli Oris. 16, Depressor Labii Inferioris. 17, The portion of 

 the Platysma Myoides that passes on to the Mouth, or the Musculus Risorius. 18, Sterno- 

 Hyoideus. 19, Platysma-Myoides. It is wanting on the other side of the Figure. 20, 

 Superior Belly of the Omo-Hyoideus near its insertion. 21, Sterno-Cleido-Mastoideus. 

 22, Scalenus Medius. 23, Inferior Belly of Omo-IIyoid. 24, Cervical Edge of the Tra- 

 pezius. 



pebrae, which takes its origin far back on the sides of the 

 cavity of the orbit, and is attached to the upper lid. When 

 contracted it opens the eye. 



237. Orbicularis Oris.— The Orbicularis Oris (circular 

 muscle of the face) by its contraction closes the mouth. Like 

 the corresponding muscle of the eye, it has its origin and in- 

 sertion in the soft parts of the face, and is made up of concen- 



237. Where is the Orbicularis Oris, and what is its use ? 



