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Origin: Proximal third of the anterior surface of ulna and interosseus membrane.
Insertion: Bases of the distal phalanges 2-5 (palmar aspect)
Actions: Flexes distal phalanges (2-5 digit) and flexes wrist.
Innervation: Median nerve and ulnar nerve (C8, T1)
Daily uses: Picking up a book.
Other muscles …
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
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: Anterior (costal) surface of the scapula
Insertion: Lesser tuberosity of the humerus
Actions: Internal rotation , Adduction
Innervation: Upper and lower subscapular nerves
Daily uses: Tucking the back of your shirt into your trousers