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Appendicular Skeleton - Pectoral Girdle + H

Includes parts of the clavicle, scapula, and humerus
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icpomm
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Last updated: October 7, 2025
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First submittedOctober 7, 2025
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Average score26.9%
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the medial, rounded end of the clavicle; articulates with the manubrium of the sternum at the sternoclavicular joint
sternal end
the lateral, flattened end; articulates with the AP of the scapula, completing the shoulder joint
acromial end
small bump on the inferior surface near the acromial end of the clavicle; attachment for C ligament = helps anchor the clavicle to the CP of the scapula
Conoid process
slight ridge running laterally from the conoid tubercle; atttachment for the trapezoid ligament
trapezoid line
prominent ridge on the posterior side; divides the scapula into S and I fossae; attachment for the trapezius and deltoid muscles
spine
large, flat projection at the lateral end of the spine; articulates with the clavicle; forms the bony "tip" of the shoulder
acromion process
hook-like projection on the anterior side; serves as an attachment point for biceps and pectoral muscles, stabilizing the shoulder joint
coracoid process
shallow socket on the lateral side; articulates with the head of the humerus to form the shoulder joint (glunohumeral)
glenoid cavity
small, shallow depression above the spine (posterior surface) for the supraspinatus muscle of the rotator cuff
supraspinous fossa
large, broad depression below the spine (posterior surface) for the infraspinatus muscle
infraspinous fossa
large, smooth depression on the anterior surface, attachemnt for subscapularis muscle
subscapular fossa
large bump lateral to the head; serves as an attachement for rotator cuff muscles
greater tubercle
smaller bump anterior and medial to the greater tubercle; attachment for the subscapularis muscle
lesser tubercle
(bicipital) groove between the tubercles; attachment for pectoralis major
intertubercular groove
rough, raised area on the lateral shaft; attachment site for the deltoid muscle.
deltoid tuberosity
narrow region below the tubercles; common site for fractures = damage the axillary nerve
surgical neck
groove below the head; marks the boundary of the joint capsule
anatomical neck
small depression on the anterior disrtal end; receives the coronoid process of the ulna when elbow flexes
coronoid fossa
shallow depression above the C receives the head of the radius when elbow flexes
radial fossa
rounded lateral condyle on the distal humerus; articulates with the head of the radius
capitulum
spool-shaped medial condyle; articulares with the trochlear notch of the ulna
trochlea
small bump above the capitulum; attachment site for extensor muscles of the forearm
lateral epicondyle
larger bump on the medial side; attachment for flexor muscles of the forearm; ulnar nerve runs behind it
medial epicondyle
shallow depression running obliquely along the posterioir shaft; houses the radial nerve and deep brachial artery
radial groove
ridge above the lateral epicondyle; attachment for branchioradialis and extensor carpi radialis longus muscles
lateral supracondylar ridge
deep depression on the posterior distal end; receives the olecranon process of the ulna when the elbow extends (straightens)
olecranon fossa
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