EXCI 253 Lecture Notes - Lecture 3: Clavicle, Deltoid Tuberosity, Conoid Ligament
19 Jul 2016
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The axial skeleton: the skeletal axis, or core of body, helps protect the internal organs. Appendicular skeleton: consists of the upper limbs and the lower limbs; its primary function is movement. Upper limbs: consists of pectoral girdles and free upper limbs. Lower limbs: consists of the pelvic girdles and free lower limbs. Each upper limb consists of 32 bones, which form 2 distinct regions: pectoral girdle: attach the bones of the free upper limbs to the axial skeleton. Each consists of a clavicle and a scapula. Each slender, s-shaped clavicle, or collarbone, lies horizontally across the anterior part of the thorax superior to the first rib. Medial half of the clavicle is convex anteriorly, and the lateral half is concave anteriorly. It is subcutaneous and easily palpable throughout its length. The junction of the clavicle"s two curves is its weakest point. Typically smoother and straighter in females, and rougher and more curved in males.
