Muscle functions, nerves, shoulder movements

Question 1

6 actions of shoulder movement ?

Answer 1

• flexion
• extension
• abduction
• adduction
• medial rotation
• lateral rotation

Question 2

Muscles involved in shoulder movement flexion

Answer 2

• pectoralis major
• deltoid
• coracobrachialis
• biceps brachii

Question 3

Muscles involved in shoulder movement extension

Answer 3

• deltoid
• latissiums dorsi
• teres major

Question 4

Muscles involved in shoulder movement abduction:
1. 0-15 degrees
2. 15 - 90 degrees
3. above 90

Answer 4

1. supraspinatus (initiator of abduction)
2. deltoid
3. serratus anterior and trapezius (MUST rotate scapula to do this)

Question 5

Muscles involved in shoulder movement adduction

Answer 5

• pectoralis major
• latissimus dorsi
• teres major

Question 6

Muscles involved in shoulder movement medial rotation

Answer 6

• subscapularis
• teres major
• pectoralis major
• latissimus dorsi

Question 7

Muscles involved in shoulder movement lateral rotation

Answer 7

• infraspinatus
• teres minor

Question 8

Which shoulder movemnt actions is the muscle teres major involved in ?

Answer 8

• extension
• adduction
• medial rotation

Question 9

Deltoid nerve ?

Answer 9

axillary

Question 10

trapezius nerve ?

Answer 10

accessory (CN XI)

Question 11

Levator scapulae nerve

Answer 11

C3-4

Question 12

Rhomboid minor & major nerve ?

Answer 12

dorsal scapula nerve

Question 13

teres major nerve ?

Answer 13

lower subscapular nerve

Question 14

latissimus dorsi nerve ?

Answer 14

thoracodorsal nerve