The topographical anatomy of the head and neck of the horse / [O. Charnock Bradley].
- Orlando Charnock Bradley
- Date:
- 1923
Licence: In copyright
Credit: The topographical anatomy of the head and neck of the horse / [O. Charnock Bradley]. Source: Wellcome Collection.
54/248 page 38
![the naso-labial muscle, and on the surface of the levator labii superioris proprius, by dividing into the dorsal nasal artery and the angular artery of the eye. In its course across the face the artery lies in succession upon (that is, lateral to) the depressor labii inferioris, buccinator, and levator labii superioris proprius muscles. It also crosses, very obliquely, the parotid duct which insinuates itself between the buccinator muscle and the facial vessels. Crossing the lateral aspect of the artery are the buccal nerves and the zygomatic muscle. The following are the branches of the facial artery :— (1) Rami musculares to the rnasseter and cutaneous muscles. (2) Rami ciitanei to the skin of the face. (3) A. labialis inferior.—The inferior labial artery takes origin at the lower border of the buccinator muscle. It runs forwards into the lower lip under cover of the risorius, buccinator, and depressor labii inferioris muscles, and can be traced to a union with the cor¬ responding artery of the other side of the head. A small angular artery of the mouth (a. angularis oris) arises from the inferior labial as this vessel reaches the.border of the orbicularis muscle, and anasto¬ moses with twigs from the superior labial artery. (4) A. labialis superior.—T]iq superior labial artery arises at the end of the facial crest. For a distance it follows the lower border of the caninus muscle, and then continues on the deep face of this muscle into the upper lip. Here its terminal branches anastomose with similar branches of the artery of the opposite side of the head, and with terminal branches of the major palatine artery. (5) A. lateralis nasi.—The lateral nasal artery, as a rule, leaves the facial just before the border of the levator labii superioris proprius is reached, and passes to the side of the nose under the naso-labial muscle. Branches of the lateral nasal and superior labial, arteries anastomose, and usually there is an anastomosis between the lateral nasal and the infra-orbital arteries. Not infrequently the lateral nasal artery is double. (6) A. dorsalis nasi.—The dorsal nasal artery passes under the naso-labial muscle to the dorsum of the nose. It helps to supply the wall of the diverticulum of the nostril. (7) A. angularis oculi.—The angular artery of the eye continues the upward curve of the facial and reaches the medial angle of the eye. It very commonly anastomoses with the malar branch of the infra-orbital artery. V. FACIALIS.—The facial vein follows the posterior border of the like- named artery, and receives tributaries corresponding to the branches](https://iiif.wellcomecollection.org/image/b29820066_0054.jp2/full/800%2C/0/default.jpg)
