323 PHYSIOLOGY AND HEALTH. 



whole face. Other nerves are in like manner spread over the 

 neck, (Fig. LXIV. e,) the arm, and every part of the body. 



FIG. LXIV. Nerves of the Face and Neck. 



a, 5, Nerve of the face. d, Nerve of the forehead. 



752. Two kinds of nerves extend from the brain and spinal 

 cord to the body those of sense and sensibility, called sen- 

 sory nerves ; and those of motion, called motory nerves. The 

 sensory nerves receive the external impressions, and convey 

 them to the brain. This class includes -both the nerves of 

 special sense, -as the optic, auditory, gustatory, and olfactory 

 nerves, which go to the eye, ear, tongue, and nose, and also 

 the nerves of general sensibility, by which we feel pleasure 

 and pain, heat and cold. The motory nerves convey from 

 the brain to the muscukr texture the stimulus of motion. 

 The muscles are supplied with both classes of nerves, and, 

 therefore, have both the feeling and motory power. 



753. These two kinds of nerves the motory and sensory 



