Deep Shoulder

Question 1

Scapulohumeral (Intrinsic) Musculature
These muscles attach the
They move the —, and contribute to the — of this joint
They are all innervated by the

Answer 1

scapula to the humerus
humerus at the shoulder joint, stabilization
brachial plexus

Question 2

Scapulohumeral (Intrinsic) Musculature includes (2)

Answer 2

• deltoid

* teres major

Question 3

Rotator Cuff Muscles (4)

Answer 3

• subscapularis
• supraspinatus
• infraspinatus
• teres minor

Question 4

Deltoid:
Proximal Attachment (3)

Answer 4

lateral 1/3 of clavicle,
acromion,
spine of scapula

Question 5

Deltoid:

Distal attachment

Answer 5

deltoid tuberosity of humerus

Question 6

Deltoid:

Actions

Answer 6

flexes, medially rotates, abducts, extends, and laterally rotates humerus

Question 7

Deltoid:

Innervation

Answer 7

axillary nerve (C5, C6)

Question 8

Teres major:

Proximal Attachment

Answer 8

posterior surface of inferior angle of scapula

Question 9

Teres major:

Distal Attachment

Answer 9

medial lip of intertubercular (bicipital) groove of humerus

Question 10

Teres major:

Actions

Answer 10

adducts and medially rotates humerus

Question 11

Teres major:

Innervation

Answer 11

-lower subscapular nerve (C5, C6)

Question 12

Supraspinatus:

Proximal Attachment

Answer 12

supraspinous fossa of scapula

Question 13

Supraspinatus:

Distal Attachment

Answer 13

superior facet of greater tubercle of humerus

Question 14

Supraspinatus:

Actions (2)

Answer 14

works with deltoid in abduction of humerus,

acts with other rotator cuff muscles in stabilizing shoulder joint

Question 15

Supraspinatus:

Innervation

Answer 15

-suprascapular nerve (C4, C5, C6)

Question 16

Infraspinatus:

Proximal Attachment

Answer 16

-infraspinous fossa of scapula

Question 17

Infraspinatus:

Distal Attachment

Answer 17

-middle facet of greater tubercle of humerus

Question 18

Infraspinatus:

Actions (2)

Answer 18

laterally rotates humerus,

helps hold humeral head in place

Question 19

Infraspinatus:

Innervation

Answer 19

suprascapular nerve (C5, C6)

Question 20

Teres minor:

Proximal Attachment

Answer 20

middle part of lateral border of scapula

Question 21

Teres minor:

Distal Attachment

Answer 21

inferior facet of greater tubercle of humerus

Question 22

Teres minor:

Actions (2)

Answer 22

laterally rotates humerus,

helps hold humeral head in place

Question 23

Teres minor:

Innervation

Answer 23

-axillary nerve (C5 & C6)

Question 24

Subscapularis:

Proximal Attachment

Answer 24

-subscapular fossa (anterior surface

of scapula

Question 25

Subscapularis:

Distal Attachment

Answer 25

-lesser tubercle of humerus

Question 26

Subscapularis:

Actions (2)

Answer 26

medially rotates and adducts humerus

helps hold humeral head in place

Question 27

Subscapularis:

Innervation