shoulder motions

Question 1

extension

Answer 1

posterior deltoid (axillary c5,6)
latissimus (thoracodorsal c6,7,8)
teres major (lower subscapular c6)

Question 2

flexion

Answer 2

anterior deltoid (axillary c5,6)

Question 3

abduction

Answer 3

supraspinatus (suprascapular c5,6)
deltoids (axillary c5,6)

Question 4

adduction

Answer 4

latissimus (thoracodorsal c6,7,8)
teres major (lower subscapular c6)

Question 5

horizontal abduction

Answer 5

posterior deltoid (axillary c5,6)

Question 6

horizontal adduction

Answer 6

pec major (lateral + medial pectoral c5-7)
- upper= opposite shoulder
-lower= ASIS

Question 7

internal rotation

Answer 7

teres major (lower subscapular c6)
subscapularis (subscapular c5,6)

Question 8

external rotation

Answer 8

infraspinatus (suprascapular c5,6)
teres minor (axillary c5,6)

Question 9

shoulder protraction

Answer 9

pec minor (medial pectoral c7-t1)