Page:Structure and functions of the body; a hand-book of anatomy and physiology for nurses and others desiring a practical knowledge of the subject (IA structurefunctio00fiskrich).pdf/143

 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 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. ''Retropharyngeal abscess'' on the posterior wall occurs rarely.

—Position of the thoracic and abdominal organs, front view (Morrow.)