THE ABDOMEN. 



137 



mouth and ciliated down to the floor of the nares; 2. a 

 fibrous coat, and 3. a muscular coat containing among 

 others the constrictor muscles which serve to carry the 

 food down to the esophagus. Its arteries are branches 



FIG. 53. Position of the thoracic and abdominal organs, front view 

 (Morrow.) 



of the external carotid and its nerves come from the 

 spinal accessory and the sympathetic. Occasionally a 

 foreign body gets lodged in the pharynx just out of reach 

 of the finger and threatens strangulation. Retropharyn- 

 geal abscess on the posterior wall occurs rarely. 



