THE ARTERIES. 105 



Occipital?* lies in the occipital groove of the temporal bone. 

 Muscular. Inferior Meningeal. Cranial Branches, over 



Auricular. Arteria Princeps Cervicis. 13 the occiput. 



Posterior Auricular^ ascends under cover of the parotid gland. 



Stylo-mastoid. Auricular. Muscular. Glandular. 



Ascending Pharyngeal, lies on the rectus capitis anticus major. 



External Branches. Pharyngeal and Meningeal Branches. 



Temporal, 1 * the smallest of the termini of the external carotid, begins in 

 the parotid gland, crosses the zygomatic arch, and divides into anterior u 

 and posterior temporal. 1 * 



Transverse Facial. 15 Middle Temporal. 17 Anterior Auricular. 

 Internal Maxillary -,* the other terminal branch of the external carotid, 1 

 is divided into three portions, Maxillary, 4 Pterygoid, 5 and Spheno-maxil- 

 lary, 6 which respectively give off the following branches: (Fig. 56.) 

 Deep Auricular, to the Deep Temporal, Alveolar. 11 



tragus and canal. ant. and posterior. Infra-orbital. 12 



Tympanic, 7 entering Pterygoid Branches, Descending Palatine. 13 



the Glaserian fissure. to those muscles. Vidian. 16 



Middle Meningeal. 8 Masseteric, to the Ptery go-palatine. 15 



Small Meningeal. 9 masseter muscle. Spheno-palatine or Nasal. 14 



Inferior Dental, 10 divides Buccal, to the bucci- 



into Incisor and Mental. nator muscle. 



Describe the Internal Carotid Artery. It ascends in front of the transverse 

 processes of the three upper cervical vertebrae, and close to the tonsil, traverses 

 the carotid canal in the temporal bone, and after piercing the dura mater by the 

 anterior clinoid process, divides into its terminal branches. Its branches are 

 the 



Tympanic, enters the tympanum from the carotid canal, and anastomoses 

 on the membrana tympani with the tympanic branch of the internal max- 

 illary, the stylo-mastoid, and the Vidian arteries. 



Arteria Receptaculi, numerous small vessels going to the walls of the sinuses, 

 the Gasserian ganglion and the pituitary body ; one of them, to the dura 

 mater, is called the Anterior Meningeal. 



Ophthalmic, arises from the cavernous portion, enters the orbit through the 

 optic foramen, terminating at the inner angle of the eye into the frontal 

 and nasal branches. It gives off, 



Lachrymal. Short Ciliary. Anterior Ethmoidal. 



Arteria Centralis Retinae. Anterior Ciliary. Palpebral. 



Muscular Branches. Supraorbital. Nasal. 



Long Ciliary. Posterior Ethmoidal. Frontal. 



Anterior Cerebral, joined to its fellow by the anterior communicating branch, 

 about 2 lines long. 



