. Quain's Elements of anatomy. n. Between it and the lower jaw are placed the externalpterygoid muscle, the internal maxillary vessels, the auriculo-temporal nerve, andthe inferior dental vessels and nerve. The internal lateral ligament is formed in the tissue surrounding a part of Meckelscartilage (p. 7S). The interarticular disc (ir meniscus is a thin plate of fibro-cartilageplaced between the articular surfaces of tlie bones. It is of an oval form, broadesttransversely, thickest posteriorly, and thinnest at its centre, where it is sometimesperforated. The inferior surface, which is in conta
. Quain's Elements of anatomy. n. Between it and the lower jaw are placed the externalpterygoid muscle, the internal maxillary vessels, the auriculo-temporal nerve, andthe inferior dental vessels and nerve. The internal lateral ligament is formed in the tissue surrounding a part of Meckelscartilage (p. 7S). The interarticular disc (ir meniscus is a thin plate of fibro-cartilageplaced between the articular surfaces of tlie bones. It is of an oval form, broadesttransversely, thickest posteriorly, and thinnest at its centre, where it is sometimesperforated. The inferior surface, which is in contact with the condyle, is concave ;the superior is concavo-convex from before backwards, conforming with the articularsurface of the temporal bone. Its circumference is attached closely to the capsule,and anteriorly a part of the external pterygoid muscle is inserted into it. Synovial sacs.—The synovial sac between the interarticular disc and theglenoid cavity is larger and looser than that which is interposed between the disc. Fig. 191.—Sagittal section of the temporo- MAXILLARY ARTICULATION OP THE lUGHT SIDE. (Allen Thomson.) 3 1, is placed close to the articular eminence,and points to the superior synovial cavity of thejoint ; 2, is placed close to the articular surfaceof the condyle of the lower jaw, and poinhs tothe inferior synovial cavity of the joint ; x , isplaced on the thicker posterior portion of theinterarticular disc. and the condyle of the jaw. Whenthe fibro-cartilage is perforated, theupper and lower synovial cavities neces-sarily communicate with each other. The stylo-maxillary ligament isthe name given to a sti-ong band ofthe cervical fascia extending from the styloid process to the angle and posteriorborder of the ramus of the jaw, where it is inserted between the masseterand internal pterygoid muscles. It S3parates the ]mrotid from the submaxillarygland. It may be proper also to mention here the stylo-hyoid ligament, a thinfibrous cord, which passes from t
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectanatomy
