. Cunningham's Text-book of anatomy. Anatomy. SALIVAEY GLANDS. 1135 join it. The apex, directed anteriorly, is formed by the facial process of the gland, and lies on the masseter muscle, and the duct of the gland issues from it, or just below it. This superficial surface is frequently prolonged beyond the limits of the parotid fossa, and passes downwards over the digastric muscle. It may descend beyond the angle of the mandible, and come into immediate relation with the posterior part of the submaxillary gland, from which it is separated merely by a thin layer of the deep cervical fascia. Deep
. Cunningham's Text-book of anatomy. Anatomy. SALIVAEY GLANDS. 1135 join it. The apex, directed anteriorly, is formed by the facial process of the gland, and lies on the masseter muscle, and the duct of the gland issues from it, or just below it. This superficial surface is frequently prolonged beyond the limits of the parotid fossa, and passes downwards over the digastric muscle. It may descend beyond the angle of the mandible, and come into immediate relation with the posterior part of the submaxillary gland, from which it is separated merely by a thin layer of the deep cervical fascia. Deep Portion of the Gland.—This portion of the gland presents an anterior surface looking forwards, deeply concave, and a posterior surface, irregular in outline, directed backwards and medially. These surfaces meet medially at the medial border, which may lie so deeply as to be in contact with the side wall of the pharynx. The lower part of the styloid Parotid duct Accessory parotid gland. Internal pterygoid Mandible Submaxillary Mucous membrane, Sublingual gland: Tongue; Mylo-hyoid/ / Anterior belly of digastric Lingual nerve Mandible - Mylo-hyoid Surface of submaxil- lary gland covered by mandible Surface covered by i ntegument and fascia; Fig. 897.—The Salivary Glands and their Ducts. process in many cases lies in contact with the inferior part of this border, and in such cases the process, together with the styloglossus and stylopharyngeus muscles, separates the medial border from the pharynx. The superior and inferior borders, at the union of the anterior and posterior surfaces, are irregular in outline, and indefinite. The relations of these two surfaces are as follows:— The anterior surface is wrapped round the ramus of the mandible, and extends on to the muscles which cover this portion of the bone laterally and medially, that is, on to the masseter and internal pterygoid muscles respectively. The posterior surface, in contact with the posterior wall of the fossa, is
Size: 1621px × 1541px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
