Pectoral girdle: Definition from Answers.com

Bone: Pectoral girdle

Human pectoral girdle
Latin	cingulum pectorale

The pectoral girdle is the set of bones which connect the upper limb to the axial skeleton on each side. It consists of the clavicle and scapula in humans and, in those species with three bones in the pectoral girdle, the coracoid. Some mammalian species (e.g. dog and horse) have evolved to have only the scapula.

In humans, the only joints between shoulder girdle and axial skeleton are the sternoclavicular joints on each side. No joint exists between each scapula and the thoracic cage, instead the muscular connection between the two permits relatively great mobility of the shoulder girdle in relation to the pelvic girdle.

In those species having only the scapula, no joint exists between the forelimb and the thorax, the only attachment being muscular.

External links

shoulder+girdle at eMedicine Dictionary

v • d • e Bones of upper limbs

Pectoral girdle, clavicle	conoid tubercle – trapezoid line – costal tuberosity – subclavian groove

Scapula	fossae (subscapular, supraspinatous, infraspinatous) – suprascapular notch – glenoid cavity tubercles (infraglenoid, supraglenoid) – spine of scapula – acromion – coracoid process borders (superior, lateral/axillary, medial/vertebral) – angles (superior, inferior, lateral)

Humerus	upper extremity: necks (anatomical, surgical) – tubercles (greater, lesser) – intertubercular sulcus body: radial sulcus – deltoid tuberosity lower extremity: capitulum – trochlea – epicondyles (lateral, medial) – supracondylar ridges (lateral, medial) – fossae (radial, coronoid, olecranon)

Forearm	radius: upper extremity (head, tuberosity) – body – lower extremity (ulnar notch, styloid process) ulna: upper extremity (tuberosity, olecranon, coronoid process, radial notch, trochlear notch) – body – lower extremity (head, styloid process)

Hand	carpus: scaphoid – lunate – triquetral – pisiform – trapezium – trapezoid – capitate – hamate (hamulus) metacarpus: 1st metacarpal – 2nd – 3rd – 4th – 5th phalanges of the hand: proximal – intermediate – distal

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