Tortora - Chapter 8 - The Skeletal System - Appendicular Skeleton

Tortora - Chapter 8 - The Skeletal System - Appendicular Skeleton

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8-1 Chapter 8 Skeletal System: Appendicular Skeleton Pectoral girdle Pelvic girdle Upper limbs Lower limbs
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8-2 Pectoral (Shoulder) Girdle Consists of scapula and clavicle Clavicle articulates with sternum (sternoclavicular joint) Clavicle articulates with scapula (acromioclavicular joint) Scapula held in place by muscle only Upper limb attached to pectoral girdle at shoulder (glenohumeral joint)
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8-3 Clavicle (collarbone) S-shaped bone with two curves medial curve convex anteriorly/lateral one concave anteriorly Extends from sternum to scapula above 1st rib Fracture site is junction of curves Ligaments attached to clavicle stabilize its position.
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8-4 Posterior Surface of Scapula Triangular flat bone found in upper back region Scapular spine ends as acromion process a sharp ridge widening to a flat process Glenoid cavity forms shoulder joint with head of humerus Supraspinous & infraspinous fossa for muscular attachments
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8-5 Anterior Surface of Scapula Subscapular fossa filled with muscle Coracoid process for muscle attachment
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8-6 Upper Extremity Each upper limb = 30 bones humerus within the arm carpal bones within the wrist metacarpal bones within the palm phalanges in the fingers Joints shoulder (glenohumeral), elbow, wrist, metacarpophalangeal, interphalangeal
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8-7 Humerus --- Proximal End Part of shoulder joint Head & anatomical neck Greater & lesser tubercles for muscle attachments Intertubercular sulcus or bicipital groove Surgical neck is fracture site Deltoid tuberosity Shaft
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This note was uploaded on 06/11/2009 for the course BIOL 251 taught by Professor Hurrell during the Spring '09 term at Delgado CC.

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Tortora - Chapter 8 - The Skeletal System - Appendicular Skeleton

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