Practical human anatomy [electronic resource] : a working-guide for students of medicine and a ready-reference for surgeons and physicians . ity and the head-and-neck sections shouldwork together upon the first part of this dissection.) Terms of Relation.—The general terms (page 2), and thespecial terms exterior and interior (toward the skin and thecavities of the trunk, respectively) will be used, in describingthis dissection. The regions of the back are the sacral, thelumbar, the dorsal, andthe cervical. Bones and Bone Areas, Plate 147.—The bones arethe posterior surfaces ofthe following : t
Practical human anatomy [electronic resource] : a working-guide for students of medicine and a ready-reference for surgeons and physicians . ity and the head-and-neck sections shouldwork together upon the first part of this dissection.) Terms of Relation.—The general terms (page 2), and thespecial terms exterior and interior (toward the skin and thecavities of the trunk, respectively) will be used, in describingthis dissection. The regions of the back are the sacral, thelumbar, the dorsal, andthe cervical. Bones and Bone Areas, Plate 147.—The bones arethe posterior surfaces ofthe following : the twenty-four vertebrae, sacrum, andcoccyx ; the occipital ; thetwelve pairs of ribs; thescapulas ; the clavicles ;and the ossa all present areas forthe attachments of mus-cles. REGION OF THE BACK. Dissection.—Make the skinincisions 1, 2, 3, and 4, of Fig-ure 11; reflect skin flaps, oneither side of the median line,as indicated. Trace the nervesand the arteries ramifying in the subcutaneous tissue plane (Plate 148) ; thenclear the fascial plane free of subcutaneous tissue, leaving the arteries andnerves in Figure 11. 266 TRUNK. 1. Occipital Artery, Plate 148.—This artery (ven?e comites)emerges from the superior portion of the muscles of the neck,and passes to the subcutaneous plane of the occipital region ofthe scalp. 2. Occipitalis Major Nerve.—This, the internal (cutaneous)branch of the posterior division of the second cervical spinalnerve, appears at the external border of the occipital portion ofthe trapezius muscle, and ramifies superiorly in the subcu-taneous plane of the scalp. 3. Internal (Cutaneous) Branch of the Posterior Divisionof the Third Cervical Spina! Nerve.—This nerve emerges in-feriorly to the last-described nerve, and has the same course. 4. Occipitalis Minor Nerve.—This nerve, a branch from thecervical plexus, runs superiorly, along the posterior border jof the sterno-cleido-mastoid muscle ; it enters the subcutane-ous
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