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Skeleton of Arm

8.1--Upper Limb: Humerus, Radius, Ulna

Humerus Longest bone in upper limb
Greater Tubercle Rounded top (head)
Lesser Tubercle 2nd rounded top, more anterior and medial, but inferior (head)
Intertubercular sulcus Groove in between greater and lesser tubercle
Surgical Neck Constriction in humerus; distal to tubercles
Body (shaft) Becomes triangular at distal end
Deltoid Tuberosity Point of attachment for tendon of deltoid muscle
Radial Groove runs along posterior margin of deltoid tuberosity on posterior surface of humerus
Capitulum Rounded knob; articulates with Radius
Radial Fossa Anterior depression above capitulum that articulates with radius when flexed
Trochlea Medial to capitulum; articulates with ulna
Coronoid Fossa receives coronoid process from ulna
Olecranon Fossa Posterior depression; receives olecranon from ulna when extended
Medial epicondyle; Lateral Epicondyle More projected; more flattened
Ulna Medial aspect (finger side) of forearm and longer than radius; thicker at proximal end
Olecranon Posterior projection; articulates with olecranon fossa
Trochlear Noth articulates with trochlea of humerus (anterior
Coronoid Process Articulates with coronoid foss (anterior)
Head (Ulna) Distal side
Syloid Process Projection on posterior side at distal end
Radius Shorter of two; thicker at distal, anterior side
Head (Radius) Proximal side; articulates with capitulum
Created by: 100000434525601



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