ORGANS OF SPECIAL SENSE. 



THE NOSE. 



THE nose,, the special organ of smell, consists of two parts, 

 the external prominence, or nose proper, and the internal cavities, 

 or nasal fossae. 



SEPTAL BRANCH ( 

 OF SUPERIOR > 

 NASAL 



FIG. 152. 



The olfactory nerves and nerves of common sensation to the nose. 

 (Eckley.) 



The nose proper is made up of a cartil ago-osseous frame work 

 covered with muscles (vide Muscles) and skin, and lined with 

 mucous membrane. The osseous portion is formed by the mar- 

 gins of the anterior meatus (vide Osteology). 



The cartilaginous portion consists of an upper and lower 

 lateral cartilage on either side, and the nasal septum dividing 

 the nasal cavity into two nasal fossa?. 



Arteries are from nasal branch of ophthalmic and infra- 

 orbital, nasal artery from superior coronary, and branches of the 

 lateralis nasi. 



Veins empty into the ophthalmic and facial veins. 



Nerves from infratrochlear, infraorbital, and facial. 

 (340) 



