THE ANATOMY OF THE FACE AND NECK 65 



The other two are the EustacMan tubes, which form communica- 

 tions between the upper part of the pharynx and the cavities of 

 the middle portions of the ears. (See fig. 205.) 



SUMMARY. 



Ethmoid bone 



COURSES OF 

 AIR 



THE 



STRUCTURES SUR- 

 ROUNDING THE < 

 NASAL CAVITIES 



THE PHARYNX 

 Communicates with 



THE PALATE 



THE TRACHEA. 



FOOD PASSAGE 



Includ'n ' Superior turbinated bone. 



* 1 Middle turbinated bone. 

 Partly separates cranial and nasal 



cavities. 

 Partly forms outer side walls of nasal 



cavity. 



Vomer Separates right and left nasal cavities. 

 Nasal bone Forms upper part of the ridge of the 



nose. 

 Nasal cartilages Form the flexible framework of 



the nose. 

 Sphenoid bone Lies between the posterior portion 



of the nasal cavity and the brain. 

 Superior maxillary bones i Form the hard palate of 

 Palatal bones i the mouth. 



Nasal cavities, by the posterior nares. 

 Mouth. 



Middle ear, by the Eustachian tubes. 

 Trachea, by the glottis. 

 OZsophagus, by which it is connected with the stomach. 



Soft palate 



, 

 Contains the vocal cordg . 



J Fleshy. Forms the back portion of 

 the roof of the mouth. 

 I Between the upper pharynx and the 

 ( mouth, 

 i Rings of cartilage, 

 Composed of J connected by 



(Soft fibrous tissue. 



_ . . ( Called the larynx. 



Upper portion { Contains the v J oca] 



Mouth. 

 Pharynx. 

 OZsophagus. 

 Stomach, &c. 

 .Nostrils. 

 Posterior nares. 

 ] Pharynx. 

 "] Glottis. 

 Trachea. 

 ' Lungs. 



(Mouth. 

 Pharynx. 

 Glottis. 

 Trachea. 

 Lungs. 



(i 



