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.
67/248 page 51
![in undergoing a large fusiform dilatation just before it passes within the mandible. Generally the buccinator vein is joined by a tributary from a venous network that lies between the buccinator muscle and mucous lining of the cheek, and commonly it is connected with the masseteric vein. N. BUCCiXAToiiius.—The buccinator is a nerve of some size and is derived from the n. mandibularis—a part of the trigeminal or fifth ceiebral nerve. It gains the present dissection by passing between the internal pterygoid muscle and the maxillary tuber, and follows the lower border of the buccinator muscle as far as the level of the first cheek-tooth. Here it insinuates itself between the buccinator muscle and the mucous lining of the cheek, and so gains the lips in the mucous membrane of which its terminal filaments ramify. In addition numerous small branches are furnished to the mucous membrane of the cheek and to the ventral buccal glands; and a connection is established with the ventral buccal nerve. A. BUCCIXATORIA.—The relatively small buccinator artery is a branch of the internal maxillary, and gains the region of the cheek by following the dorsal border of the buccinator nerve. Branches of the artery supply blood to the pterygoid, masseter and buccinator muscles and the dorsal buccal glands. The buccal glands (Glandulas buccales).—There are two groups of these, dorsal and ventral. The dorsal glands form an elongated flattened mass along the surface of the maxilla and the buccinator muscle, extending forwards from the anterior edge of the mandibular ramus. It is often possible to divide the group into two parts. The larger portion lies underneath the masseter muscle; while a smaller and more scattered part extends in front of the masseter to within a measurable distance from the angle of the mouth. The smaller ventral buccal glands are at present hidden by the buccinator and the depressor muscle of the lower lip. They stretch from the margin of the masseter to the level of the angle of the mouth. -M. BUCCINATOH.—Though the whole of the buccinator' muscle cannot be seen until the mandible has been removed, it is necessary that that portion now visible should be examined before any further dissection is performed. I he buccinator muscle may be divided into two parts. (I) The buccal part (pars buccalis) is the more superficial and is limited to that region of the cheek that is anterior to the masseter muscle. It is ^ Buccinator [L.], trumpeter.](https://iiif.wellcomecollection.org/image/b29820066_0067.jp2/full/800%2C/0/default.jpg)
