Origin: Lateral supracondylar ridge of the humerus. 
Posterior part of the ulna

Insertion: Outer surface of the upper third of the radius

Actions: Supination

Innervation: Posterior interosseous branch of the radial nerve

Daily uses: Turning a screwdriver



Other muscles of the Upper Limb


Origin: Posterior surface of the scapula (below the spine of the scapula)

Insertion: Greater tuberosity on the humerus

Actions: Shoulder abduction, 
External rotation.

Innervation: Suprascapular nerve

Daily uses: Brushing hair.

Teres Minor

Origin: Mid section of the lateral border of the scapula

Insertion: Greater tuberosity on the humerus

Actions:External rotation, 
Shoulder adduction

Innervation: Axillary nerve

Daily uses: Brushing hair


Origin: Supraspinous fossa

Insertion: Greater tuberosity of the humerus

Actions: Abduction 
Stabilisation of the humerus

Innervation: Suprascapular nerve

Daily uses: Holding shopping bags away from the body

// ]]>

More Anatomy

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