Pectoralis Minor

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Pectoralis Minor mm    Pectoralis Minor: Origin and Insertion    Pectoralis Minor

Origin: Anterior surfaces of third, forth and fifth ribs.

Insertion: Coracoid process of the scapula.

Actions: Draws scapula downwards and anterior (forwards)

Innervation: Medial pectoral nerve C(6), C7, C8, T1

Daily uses: Using arms to get up from a chair/car.


Back to muscles

Other muscles…..

Infraspinatus

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

Supraspinatus

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

How do you stretch subscapularis and pectoralis major?

You should not complete this stretch if you have any shoulder problems. Speak to your physio who can advise you further.

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