. The anatomy of the human body. Human anatomy; Anatomy. 198 MYOLOGY. MUSCLES OF THE POSTERIOR REGION OF THE TRUNK. The Trapezius.—Latissimus Dorsi and Teres Majm.—Rhomboideus.—Levator Anguli ScapulcB. Serrati Postici.—Splenius.—Posterior Spinal Muscles.—Complexus.—Inter- spinalis Colli.—Recti Capitis Postici, Major et Minor.—Ohliqui Capitis, Major et Minor. General View and Action of the Posterior Spinal Muscles. The muscles situated on the posterior region of the trunk form several layers, which, proceeding from the skin to the bones, consist, on either side, of the trapezius, the latis- sim
. The anatomy of the human body. Human anatomy; Anatomy. 198 MYOLOGY. MUSCLES OF THE POSTERIOR REGION OF THE TRUNK. The Trapezius.—Latissimus Dorsi and Teres Majm.—Rhomboideus.—Levator Anguli ScapulcB. Serrati Postici.—Splenius.—Posterior Spinal Muscles.—Complexus.—Inter- spinalis Colli.—Recti Capitis Postici, Major et Minor.—Ohliqui Capitis, Major et Minor. General View and Action of the Posterior Spinal Muscles. The muscles situated on the posterior region of the trunk form several layers, which, proceeding from the skin to the bones, consist, on either side, of the trapezius, the latis- simus dorsi and teres major, the rhomboideus and levator anguli scapulae, the serrati postici, superior and inferior, the splenius, the long muscles of the back, viz., the sacro- lumbal'is and longissimus dorsi; the transversalis colli and the complexus (which I re- gard as two series of accessory fasciculi to the longissimus dorsi) ; the complexus ma- jor, the inter-spinales coUi, the recti capitis postici, major et minor, and the obliqui capitis, major et minor.* The Trapezius. Dissection. 1. Render the muscle tense by placing a block under the chest; 2. Make an incision through the skin from the occipital protuberance to the twelfth dorsal verte- bra and another horizontally from the seventh cervical vertebra to the external end of the'clavicle ; 3. Reflect the two flaps, together with the cellular membrane adhering in- timately to the muscle ; 4. Dissect very carefully the insertions into the occipiteil bone, which consist of a very thin aponeurosis closely united to the skin. The trapezius (cucuUaris, Albinus, a, Jigs. 106,113), the most superficial muscle on the •* -,^„*«-;^— «^™;,,.« «r*u« 4'».-.»i* rt^.tr^; Fig. 106. posterior region of the trunk, covers the nape of the neck and the back. It is a broad triangular, rather than trapezoid muscle, thick in the mid- dle, thin and elongated at its supe- rior and inferior angles. Attachment
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