HUMB1004 Study Guide - Final Guide: Shoulder Girdle, Conoid Ligament, Suprasternal Notch
4 Aug 2018
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Clavicle acts a strut to project upper limb away from the trunk, provides mobility to the girdle because it acts as a breakable link in the chain. Best to be fractured @ the clavicle, rather than dislocating the sternoclavicular joint which is very damaging/dangerous and potentially life threatening. Increases mobility, projects upper limbs outwards so they can be more useful. Inferior surface rougher re-(cid:373)odelled a(cid:272)(cid:272)ordi(cid:374)g to wolf(cid:859)s law ((cid:271)o(cid:374)e re(cid:373)odels a(cid:272)(cid:272)ordi(cid:374)g to stresses placed upon it) Inferior surface rougher has attachments for: subclavian groove (in middle)- for subclavius muscle, conoid tubercle for conoid ligament (coracoclavicular ligament) on lateral end, trapezoid line for trapezoid ligament, costoclavicular tubercle insertion. Articulates w/ clavicular notch of the manubrium (jugular notch) Flatter, facet faces inferiorly (articular surface of facet of clavicle) Medial - convex anteriorly for about 2/3 of its length. Lateral shorter, sharper, concave anteriorly about 1/3 of its length.
