File:Quain's elements of anatomy (1882) (14592963170).jpg

Identifier: quainselementsof82quai02 (find matches)
Title: Quain's elements of anatomy
Year: 1882 (1880s)
Authors: Quain, Jones, 1796-1865 Thomson, Allen, 1809-1884 Sharpey-Schäfer, E. A. (Edward Albert), Sir, 1850-1935, ed Thane, George Dancer, 1850-1930
Subjects: Human anatomy Anatomy
Publisher: London : Longmans, Green
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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platysma muscle. It is bounded aboveby the zygoma, below by a line drawn backwards from the lower borderof the jaw to the sterno-mastoid muscle, and behind by the externalmeatus of the ear, the mastoid process, and sterno-mastoid muscle. Its THE PAEOTID GLAND. 575 anterior border, whicn lies over the ramus of the lower jaw, is less dis-tinctly defined, and stretches forwards to a variable extent on the mas-seter muscle. It is from this anterior border of the gland that the excre-tory duct passes off; and thera is fi^equently found in connection withthe duct, and lying upon the masseter muscle, a small process or a sepa-rated portion of the gland (p), which is called glcmdula socia paroiidis.On trying to raise the deeper part of the parotid gland from its position,it is found to extend far inwards, between the mastoid process and theramus of the jaw, towards the base of the skull, and to be intimately con-nected with several deep-seated parts. Thus, above, it reaches into and Fig. 500.
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Pig. 500.—Sketch of a supbkficial dissection of the face, showing the positionOF the parotid and submaxillary glands (Allen Tliomson). -f p, parotid gland ; p, socia parotidis ; d, the duct of Stenson before it perforates thebuccinator muscle ; a, transverse facial artery; n, n, branches of the facial nerve emerging- from below the gland ; /, the facial artery passing out of a groove in the sub-maxillarygland and ascending on the face ; s m, superficial portion of the submaxillary gland. occupies the posterior part of the glenoid cavity; behind and below, ittouches the digastric muscle, and rests on the styloid process and styloidmuscles; and, in front, under cover of the ramus of the jaw, it advancesa certain distance between the external and internal pterygoid muscles. The internal carotid artery and internal jugular vein are close to thedeep surface of the gland. The external carotid artery, accompanied bythe temporo-maxillary vein, passes through the parotid gland, and inthat si

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