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ANATOMY IX A NUTSHELL. 



muscle to anastomose with the deep cervical from the superior intercostal. 

 (5) Muscular branches to the adjacent muscles. 



The posterior auricular artery (Plate CXVI.) is a branch of the external 

 carotid which arises opposite the apex of the styloid process of the temporal 

 bone and passes between the facial nerve and spinal accessory nerve under the 

 parotid gland into the groove between the mastoid process of the temporal 

 In me and the cartilages of the ear where it divides into auricular and mastoid 

 branches. Its branches are (1) muscular, (2) glandular (parotid), (3) 

 stylomastoid which passes through the stylo-mastoid foramen to (a) the 

 tympanum, (b) mastoid cells, (c) semicircular canals, and it anastomoses with 

 the tympanic branch of the internal maxillary and the petrosal branch of the 

 middle meningeal, (4) Auricular branch to back of the ear, (5) mastoid to 

 the scalp above and behind the ear. 



The ascending pharyngeal branch (Plate CXVI.) is the smallest and most 

 deeply seated of the branches of the external carotid and arises from near the 

 beginning of the artery (sometimes from the internal carotid). It passes up- 



PLATE CXXVI. 





BRONCHIAL TUBE 



Air Cells of the Lungs. 



ward to the base of the skull on the Rectus capitis anticus major between the 

 pharynx and the internal carotid artery. Its branches are (1) prevertebral, 

 which passes to the structures on the front of the spine, (2) pharyngeal, 

 which pass to the Constrictor muscles and one of its branches passes along the 

 Eustachian tube to the tympanum. (3) Meningeal branches which pass to 

 the dura mater through (a) middle lacerated foramen, (b) posterior lacerated 

 foramen, (c) anterior condyloid foramen. 



The superficial temporal branch arises from the external carotid in the 

 parotid gland and passes upward over the posterior root of the zygoma above 

 which it divides into the anterior temporal and posterior temporal. Its 

 branches are (1) small ones to the parotid gland. (2) articular ones to the 

 lower jaw, (3) muscular ones to the muscles, (4) anterior temporal which 

 runs forward to structures on the frontal bone, (5) posterior temporal which 



