le. 
e seventh pair; those of the internal part aré also 
seventh tate but ofthe soft portion. Use, the organ 
THE NOSE. , * 
A prominence of the face between the eyes and mouth. It is di- 
vided into root, back, top, and wings. The soft parts are, the skin, 
-muscles, cartilages, bone membrane, and cartilage membrane. |The 
soft parts of the nostrils, are, a pituitary, or mucus membrane, — 
which lines the internal surface of the nose, and all its cavities, con- 
tains the mucus glands, and has distributed on it the smelling erves, 
and the bone membrane. Its arteries are branches of at r 
jaw artery; the veins empty into the internal jugulars. Its nerves 
. a branches of the smelling, eye, and upper jaw. Use, for smelling, 
breathing, and speech. 
CAVITY OF THE MOUTH. 
ig 
d seventh pair. 
are, the pa 
PHYSIOLOGY OF CHEWING. 
Chewing is the grinding of food between the teeth, which is effect. 
ed by the the jaws, tongue, cheeks, and lips. The powers which 
move these parts are their various muscles, by which the low 
jaw is pulled from the upper, and again brought to i 
the tongue perpetually puts the food between e 
cheeks and lips prevent it, when chewed, fro s 
‘Mouth. By this process, the food is divided, lacerated, as it 
were, ground, and mixed with the saliva and mucus of the mouth, _ 
and the atmospherical air, and thus rendered fit to be swallowed and _ 
that chewing, or mastication, is in fact an incipient di- 
Pree 
< 
<a “TONGUE. thegt : sivaliees 
whe 
A muscular body, moveable in every direction, situated in» 
cavity of the mouth. Divided into base, body, sides, and top 
nnected with the tongue bone, bottom of the lower. i 
nervous points, which are sit, 
tongue, are pyramidal, or cone-shaped. Its su 
“with a searf skin, coloring mucus, and true 
