Lab 19 - Image 7

Superficial equine head dissection. The dorsal (1) and ventral (2) buccal branches of the facial nerve are vulnerable to external trauma. 3, infraorbital n.; 4, mental nerve; 5, facial a.; 6, transverse facial a.; 7, mandible; 8, masseter m.; 9, levator labii superioris m. (lip curl); 10, caninus m.; 11, depressor labii inferioris m,; 12, parotidoauricularis m. (distal part removed to expose the underlying parotid gland (13), 14, hole in skull to expose the choncofrontal sinus.