136 The Alliijator and Its Allies 



main divisions: (i) the ophthalmic branch, (2) 

 the superior maxillary branch, and (3) the inferior 

 maxillary branch, (i) The ophthalmic in turn 

 divides into two branches: the smaller, frontal, 

 going to the integument of the upper and lower 

 eyelids; the larger, nasal, going chiefly to the nasal 

 cavity but also sending some small branches to the 

 upper and lower eyelids. (2) The superior maxil- 

 lary branch separates into a number of divisions: 

 (a) a branch that, in the neighborhood of the 

 auditory capsule, fuses with the facial nerve; (b) 

 a twig to the integument of the forehead and 

 to the upper and lower eyelids ; (c) a branch to the 

 Harderian gland and the conjunctiva; (d) a branch 

 to the neighborhood of the cheek, to the angle of 

 the mouth, and to the palatine branch of the facial 

 nerve; (e) a branch to the palate; (f) a branch to 

 the integument of the upper jaw; (g) a branch to 

 the teeth of the upper jaw. (3) The inferior 

 maxillary branch divides into four branches: (a) 

 this division supplies the skin of the cheek 

 region; (b) a branch to the chewing muscles; (c) 

 a branch that divides into two nerves — the 

 first going to the skin of the lower jaw, the 

 second dividing again into two nerves, both of 

 which lead to the integument of the lower jaw; 

 (d) the fourth division of the inferior maxillary, 

 known as the inferior alveolar, itself divides into 

 two twigs — (a') the first twig divides into two 

 parts, a larger and a smaller, both of which lead, 



