KINS 2295 Lecture Notes - Shoulder Joint, Semimembranosus Muscle, Biceps

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10 May 2013
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Myology: use skeletons marked with muscles origins and insertions, wall charts, and anatomy books to identify the origin, insertion, and actions of each of the following muscles, trapezius. Origin: base of the skull; ligaments of the neck; spines of the seventh cervical and all of the thoracic vertebrae. Actions: upward rotation of the scapula; elevation of the scapula; retraction of the scapula: levator scapulae. Origin: transverse processes of the upper four cervical vertebrae. Actions: elevates the medial margin of the scapula: serratus anterior. Origin: surface of the upper nine ribs at the side of the chest. Actions: protraction of the scapula; upward rotation of the scapula: rhomboid. Origin: spinous processes of the last cervical and the first five thoracic vertebrae (cannot be viewed superficially, it is deep to the trapezius) Actions: retraction and downward rotation of the scapula: deltoid anterior, middle, and posterior heads.

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