Origin: lower 1/3 of the lateral border of the scapula
Insertion: Intertubercular goove (between the greater and lesser tubercles) of the humerus
Actions: Adduction, Internal rotation, Extension
Innervation: Lower subscapular nerve
Daily uses: Tucking the back of your shirt into your trousers
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.
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