52 



EQUINE ANATOMY. 



SUPER-MAXILLO-NASALIS MAGNUS. 



Origin. — Below ridge on superior maxilla. 

 Insertion. — Skin of external wing of nostril. 

 Action. — Dilates anterior nares. 

 Nerve. — Facial. 



Fig. 5. 



SUPERFICIAL MUSCLES OF THE FACE AND HEAD. 



Temporo-auricularis externus, or attoUens maximus; 2, Levator palpebrae, or corrugalor 

 supercilii; 3, Temporo-auricularis internus, or attollens posterior; 4, 5, Zygotnatico- 

 auricularis, or attollens anterior; 6. Orbicularis palpebrarum; 7, Parotido-auricularis, 

 or deprimens aurem; 8, Parotid gland; 9, Temporal, or sub-zygomatic vein ; 10, Ditto, 

 artery; 11, 12, Superior and inferior maxillary nerves; 13, Fascia of the masseter 

 muscle; 14, Nasal bones; 15, Super-naso labialis, or levator labii superioris alaeque nasi; 

 16, Super-maxillo-labialis, or nasalis longus labii superioris; 17, External maxillary or 

 facial artery; 18, Facial vein; 19, Super-maxillo-nasalis magnus, or dilatator naris 

 lateralis; 20, Superior maxillary nerve; 21, Zygomatico-labialis, or zygomaticus; 

 22, Parotid, or Steno's duct; 23, Masseter; 24, Alveolo-labialis, or buccinator; 25, 

 Super-maxillo-nasalis parvus, or nasalis brevis labii superioris; 27, Labialis, or or- 

 bicularis oris; 28, Maxillo-labialis, or depressor labii inferioris; 29, Mento-labialis, or 

 levator menti. 



SUPER MAXILLO- NASALIS MINOR. 



Origin. — External process of pre-maxilla and superior maxilla. 

 Insertion. — Skin and cartilage of nos<-ril. 

 Action. — Dilatation of nostril. 

 Nerve. — Facial , 



