Shoulder abductors

Question 1

Supraspinatus

Answer 1

O: medial two-thirds of supraspinous fossa and supraspinous fascia

I: capsule of shoulder joint, greater tubercle of humerus

D:

A: abducts shoulder

N: suprascapular nerve (C5,6)

Question 2

Deltoid (middle fibres)

Answer 2

O: Lateral margin of acromion processes

I: deltoid tuberosity of humerus

D:

A: abducts shoulder

N: axillary nerve (C5,6)