CIRCULATORY SYSTEM. 



lines higher up the facial sends forward a third branch, the Su> 

 perior Coronary, which goes to the upper lip. These coronary 

 arteries are very tortuous, and are distributed by many branches 

 in the substance of the lips: by anastomosing with their conge- 

 ners of the other side, they surround the mouth completely. 

 The superior coronary artery, as it passes under the nose, sends 

 upwards one or more smajl branches to the integuments of its 

 orifice and septum. 



After this, the facial artery, in ascending towards the internal 

 canthus of the eye, sends a branch to the ala nasi, and another 

 to anastomose with the infra-orbitar artery. It, finally, termi- 

 nates at the internal canthus of the eye by anastomosing with 

 the branches of the ophthalmic, which come out there upon the 

 side of the root of the nose. Several ramusclcs, which are too 

 small to merit special description, are given by the facial to 

 the integuments and muscles of the face, and to the lower 

 eyelid. 



The Inferior Pharyngeal Artery (Art. Pharyngea Inferior, as* 

 tendens) is one of the smallest of the original branches of the ex- 

 ternal carotid, and generally arises opposite to the lingual ; but 

 there is much variety in the latter respect, it being sometimes 

 higher up or lower down, and not unfrequently a branch of one 

 of the other arteries, instead of being an original trunk. It 

 ascends on the side of the pharynx, between the external and 

 the internal carotid, and is covered by the stylo-pharyngeus 

 muscle. It is principally distributed on the constrictor muscles 

 of the pharynx, and upon their lining membrane. But one of 

 its branches, called the Posterior Meningeal Artery, ascends 

 through the posterior foramen lacerum of the cranium, between 

 the jugular vein and the pneumo-gastric nerve, and is distri- 

 buted on the contiguous dura mater. 



The Occipital Artery (Arteria Occipitalis) is a very consi- 

 derable trunk, which comes from the external carotid, generally 

 opposite to the facial, and is spent upon the integuments, on the 

 back part of the head. 



At its root, it is deeply situated in the side of the neck, below 

 the parotid gland, and has the internal jugular vein and the par 

 vagum on its inside. It goes obliquely backwards, in ascending 



