Shoulder

Question 1

Supraspinatus O

Answer 1

supraspinatus fossa of scapula

Question 2

Supraspinatus I

Answer 2

superior facet of greater tubercle of humerus

Question 3

Supraspinatus Innervation

Answer 3

suprascapular nerve C4, C5, C6

Question 4

Supraspinatus Action

Answer 4

Initiates and assists deltoid in abduction of shoulder joint and acts with other rotator muscles

Question 5

Infraspinatus O

Answer 5

infraspinous fossa of scapula

Question 6

Infraspinatus I

Answer 6

middle facet of greater tubercle of humerus

Question 7

Infraspinatus Innervation

Answer 7

suprascapular nerve C5, C6

Question 8

Infraspinatus Action

Answer 8

Laterally rotate shoulder joint; help hold humeral head in glenoid cavity of the scapula

Question 9

Subscapularis O

Answer 9

subscapular fossa (most of anterior surface of scapula)

Question 10

Subscapularis I

Answer 10

lesser tubercle of humerus

Question 11

Subscapularis Innervation

Answer 11

upper and lower subscapular nerves (C5, C6, C7)

Question 12

Subscapularis Action

Answer 12

medially rotates and adducts shoulder joint, helps hold humeral head in glenoid cavity.

Question 13

Teres Minor O

Answer 13

middle part of the lateral border of scapula

Question 14

Teres Minor I

Answer 14

inferior facet of greater tubercle of humerus

Question 15

Teres Minor Innervation

Answer 15

axillary nerve C5, C6

Question 16

Teres Minor Action

Answer 16

Laterally rotate shoulder joint; help hold humeral head in glenoid cavity of the scapula

Question 17

Teres Major O

Answer 17

inferior part of lateral border of scapula and posterior surface of inferior angle of scapula

Question 18

Teres Major I

Answer 18

medial lip of intertubercular sulcus of the humerus

Question 19

Teres Major Innervation

Answer 19

lower subscapular nerve C5 C6

Question 20

Teres Major Action

Answer 20

aducts and medially rotates shoulder joint

Question 21

Deltoid O

Answer 21

lateral third of clavicle, acromion and spine of scapula

Question 22

Deltoid I

Answer 22

deltoid tuberosity of humerus

Question 23

Deltoid Innervation

Answer 23

axillary nerve C5, C6

Question 24

Deltoid Action

Answer 24

Clavicular (action): part flexes and medially rotates shoulder joint; acromial (middle part abducts shoulder joint; spinal (posterior) part extends and laterally rotates shoulder joint