Shoulder joint

Question 1

Superior muscles of the shoulder joint

Answer 1

Deltoid, Supraspinatus

Question 2

Posterior muscles of the shoulder joint

Answer 2

Infraspinatus, Teres minor

Question 3

Anterior muscles of the shoulder joint

Answer 3

Subscapularis, Pectoralis major, Coracobrachialis, Biceps brachii (stability)

Question 4

Inferior muscles of the shoulder joint

Answer 4

Latissimus dorsi, Teres major,

Long head of Triceps brachii (stability)

Question 5

Function of the deltoid

Answer 5

POWERFUL abductor

Question 6

Functions of middle deltoid

Answer 6

abduction

Question 7

functions of the anterior deltoid

Answer 7

Abduction
Flexion
Horizontal adduction
Internal rotation

Question 8

Functions of supraspinatus

Answer 8

Weak abduction -(Works with deltoid)
Weak flexion
Stabilizes GH joint

Question 9

2 Facts about supraspinatus

Answer 9

Important dynamic stabilizer in throwing

Most often injured of rotator cuff muscles

Question 10

Motions of the infraspinatus

Answer 10

External rotation —Most powerful
Horizontal abduction
Extension

Question 11

3 facts about the infraspinatus

Answer 11

Maintains posterior stability of humeral head in fossa
Effective when rhomboids stabilize scapula
2nd most injured rotator cuff muscle

Question 12

motions of the teres minor

Answer 12

External rotation
Horizontal abduction
Extension

Question 13

functions of the teres minor

Answer 13

Stabilizes humeral head in glenoid fossa

Functions similarly to infraspinatus; same actions

Question 14

Motions of the subscapularis

Answer 14

Internal rotation
Adduction
Extension

Question 15

Functions of the subscapularis

Answer 15

Stabilization of GH joint

Provides anterior and inferior stability

Question 16

2 portions of the pectoralis major

Answer 16

clavicular portion

Sternocostal portion

Question 17

functions of the clavicular portion of pectoralis major

Answer 17

Flexion
Horiz. adduction
Internal rotation
Abd/add

Question 18

functions of the sternocostal portion of pectoralis major

Answer 18

Internal rotation
Horiz. adduction
Extension
Adduction

Question 19

motions of the Coracobrachialis

Answer 19

Horizontal adduction
Assists in flexion
Assists in adduction

Question 20

function of the coracobrachilais

Answer 20

Most functional in horizontal adduction

Stabilizes shoulder joint

Question 21

motions of the latissumas dorsi

Answer 21

Adduction —Strong action
Extension
Internal rotation & horizontal abduction

Question 22

functions of latissimus dorsi

Answer 22

One of most important extensors; powerful in chinning

Question 23

motion of teres major

Answer 23

Extension (from flexed)
Internal rotation
Adduction (from abducted)

Question 24

function of teres major

Answer 24

Effective only when rhomboids stabilize scapula

Works effective with lats

Question 25

Flexors / Extensors

Answer 25

``` Anterior & posterior deltoid Coracobrachialis Pectoralis major - clavicular and sternal Latissimus dorsi Teres major SITS (-supra) ```

Question 26

Abductors/adductors

Answer 26

``` Anterior/middle/posterior deltoid Pect major-clavicular (abd 90) Supraspinatus Latissimus dorsi Coracobrachialis Teres major Pect major-sternal clavicular (below 90 abd) Subscapularis ```

Question 27

internal external rotators

Answer 27

``` Anterior posterior deltoid Teres major/minor Latissimus dorsi Pect major-both Subscapularis Infraspinatus ```

Question 28

horizontal abductor/adductor

Answer 28

``` Anterior/Posterior deltoid Latissimus dorsi Infraspinatus Teres minor Coracobrachialis Pect major-both ```