MUSCLES MOVING THE ARM AT SHOULDER JOINT

Question 1

Pectoralis major

Answer 1

Arm adductor, flexor and medial rotator

Question 2

Deltoideus (Anterior)

Answer 2

Major arm abductor; arm flexor and medial rotator

Question 3

Subscapularis

Answer 3

Arm medial rotator; part of rotator cuff

Question 4

Deltoideus (Posterior)

Answer 4

Major arm abductor; arm extensor and lateral rotator

Question 5

Latissimus dorsi

Answer 5

Powerful arm retractor; arm extensor, adductor and medial rotator; crosses the shoulder joint

Question 6

Supraspinatus

Answer 6

Arm abductor (assists deltoid)

Question 7

Arm abductor (assists deltoid)

Answer 7

Arm lateral rotator

Question 8

Teres minor

Answer 8

Arm lateral rotator

Question 9

Teres major (synergist)

Answer 9

Arm extensor, adductor and medial rotator (assists latissimus dorsi)

Question 10

What are the four rotator cuff muscles (SITS)?

Answer 10

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

Question 11

What are rotator cuff muscles?

Answer 11

Tendons of SITS muscles reinforce shoulder joint capsule and hold the humeral head against glenoid fossa (preventing dislocation of shoulder joint)