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Question 1

Supraspinatus

movement

Answer 1

GH abduction

Question 2

supraspinatus

stabilization

Answer 2

strong compressive force

small superior translatory component

Question 3

infraspinatus

movment

Answer 3

lateral rotates humerus

Question 4

infraspinatus

stabiliz

Answer 4

strong compressive force
inferior translatory component
helps to center the humeral head

Question 5

subscapularis

stabiliz

Answer 5

strong compressive force
inferior translatory component
helps to center the humeral head

Question 6

teres minor

stabiliz

Answer 6

strong compressive force
inferior translatory component
helps to center the humeral head

Question 7

subcapularis

movemnt

Answer 7

medial rotates humerus

Question 8

teres minor

movement

Answer 8

laterally rotates the humerus

Question 9

teres major

movement

Answer 9

medially rotates, adducts, extends the humerus

Question 10

deltoid

movement

Answer 10

GH abd 
GH flexion ( anterior deltoid ) 
GH extension ( post. deltoid

Question 11

deltoid

stabilization

Answer 11

Very strong superior translatory force which actually creates a dislocating effects

Question 12

Long head of biceps

movement

Answer 12

GH flexion

if humerus if laterally rotated contributes to abduction

Question 13

long head of biceps

stabilization

Answer 13

provides ant. stabilization and limits superior and inferior translations

helps to center the humeral head in fossa

Question 14

Gravity

movement

Answer 14

due to the line of pull creates an adduction moment

Question 15

gravity

stabilization

Answer 15

cause inferior glide of the humeral head during abduction. inferior translatory force at rest

Question 16

rotator interval capsule ( superior capsule, superior GH ligament, coracohumeral ligament)

movement

Answer 16

creates an abduction moment

Question 17

rotator interval capsule ( superior capsule, superior GH ligament, coracohumeral ligament)

stabilization

Answer 17

superior translatory force at rest

compressive force at GH joint

Question 18

upper traps

movement

Answer 18

elevates and upward rotates the scapula

Question 19

middle traps

movment

Answer 19

retracts and contributes to upward rotates of the scapula

Question 20

lower trap

movement

Answer 20

upward rotation and depression of the sapula in force couple with serratus anterior

Question 21

lower trap

stabilization

Answer 21

prevents dowward rotation of scapula as the deltoid and supraspinatus abduct the humerus

Question 22

lats

movement

Answer 22

medially rotates adducts and extends humerus

Question 23

lats

stabilization

Answer 23

compression of the GH when humerus is above the horizontal

Question 24

Rhomboids

movement

Answer 24

retract elevate and downward rotation of the scapula

Question 25

Rhomboids

stabiliz

Answer 25

stabilize the scapula to allow teres major to move the humerus and control scapular position changes caused by the serratus anterior and trap

Question 26

pectorals minor and major

movement

Answer 26

minor- protracts and depresses the scapula

major- depress the scapula

Question 27

Serratus anterior

movment

Answer 27

upper portion elevates the scapula, lower portion depress the scapula

Question 28

Serratus anterior

stabiliz

Answer 28

Force couple with trap to counteract the downward rotation produced by deltoid

Question 29

Levator scapulae

movement

Answer 29

elevates and downward rotation of scapula