A text-book of clinical anatomy : for students and practitioners . ig. 33.—Cross-section of neck at level of larynx, showing arrangement of deepcervical fascia, etc. 1, External jugular vein. 2, Sternocleidomastoid muscle. 3,Internal jugular vein. To its inner side is seen the common carotid artery, and lyingbetween the two, but at a posterior level, the vagus nerve on each side (white dot). 4,Placed in larynx between true vocal cords. 5, Placed between cricoid and thyroid carti-lages. 6, Sternohyoid muscle. 7, Thyroid gland. 8, Body of cervical vertebra, abovewhich the spinal cord and ligamen
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A text-book of clinical anatomy : for students and practitioners . ig. 33.—Cross-section of neck at level of larynx, showing arrangement of deepcervical fascia, etc. 1, External jugular vein. 2, Sternocleidomastoid muscle. 3, Internal jugular vein. To its inner side is seen the common carotid artery, and lyingbetween the two, but at a posterior level, the vagus nerve on each side (white dot). 4, Placed in larynx between true vocal cords. 5, Placed between cricoid and thyroid carti-lages. 6, Sternohyoid muscle. 7, Thyroid gland. 8, Body of cervical vertebra, abovewhich the spinal cord and ligamenta denticulata are seen. 9, Brachial plexus. 10, Trape-zius muscle, n, Muscles at back of neck. The line points to the middle (previsceral)layer of the deep cervical fascia, and can be followed forward. 12, Vertebral vessels andsympathetic nerve. The dotted line represents the prevertebral layer of the deep cervicalfascia. Between the cricoid cartilage (5) and the body of the vertebra (8), but separatedfrom it by the prevertebral fascia, is seen the esophagus.. Fig. 34.—Front view of branchial cyst. 113 SUBMAXILLARY REGION, OR TRIANGLE. 115 diately beneath the cellular tissue is the superficial or outer layer of thedeep fascia, which forms a firm investment for the organs of the neck.Its upper limit extends from the occiput to the chin; its lower is attachedto the sternum, clavicle, acromion, and spine of the scapula (see Figs. 33and 35). It is attached behind to the ligamentum nuchas and is contin-uous across the median line in front. It divides to include the sterno-mastoid and trapezius muscles (see Figs. t, t, and 35). Opposite the hyoidit divides to inclose the submaxillary gland, and is then attached to thejaw (Fig. 35). For these reasons abscesses of the submaxillary gland areunder great tension and often take a deeper course. Abscesses situatedelsewhere tends to gravitate toward the lower attachment of the fascia, or, if from the spine, are limited by the sternomastoi