Shoulder lateral rotators

Question 1

Teres minor

Answer 1

O: upper two- thirds of dorsal surface of scapula

I: lower facet on greater tuberosity of humerus, lower posterior surface of capsule of shoulder joint

D:

A: laterally rotates shoulder

N: axillary nerve (C5,6)

Question 2

infraspinatus

Answer 2

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

I: middle facet on greater tubercle of humerus, posterior aspect of capsule of shoulder joint

D:

A: laterally rotates shoulder

N: suprascapular nerve (C5,6)

Question 3

deltoid (posterior fibres)

Answer 3

O: lower edge of crest of spine of scapula

I: deltoid tuberosity of humerus

D:

A: extend and laterally rotates shoulder

N: axillary nerve (C5,6)