Shoulder Complex

Front 1

bones

Back 1

scapula

clavicle

sternum

humerus

rib cage

Front 2

joints

Back 2

sternoclavicular

acromioclavicular

glenohumeral

scapulothoracic functional articulation

Front 3

shoulder girdle

Back 3

scapula and clavicle

Front 4

shoulder joint

Back 4

between glenoid fossa of scapula and head of humerus

Front 5

only direct attachment of upper extremity to the trunk

Back 5

sternoclavicular

Front 6

sternoclavicular accompany shoulder girdle motions

Back 6

elevation/depression

protraction/retraction

rotation

Front 7

sternoclavicular ligament

Back 7

sternum to clavicle

anterior limits posterior movement of clavicle

posterior limits anterior movement of clavicle

reinforces joint capsule

Front 8

costoclavicular ligament

Back 8

limits clavicular elevlation

1st rib to clavicle

Front 9

interclavicular ligament

Back 9

connects sternal ends of clavicles

limits clavicular depression

Front 10

acromioclavicular jint

Back 10

connects acromion process with lateral clavicle
plane shaped synovial joint

elevation/depression of scapula with clavicle

protraction/retraction of scapula with clavicle

rotation of scapula with clavicle

Front 11

holds the acromion process to the clavicle and prevents dislocation of the clavicle

Back 11

acromioclavicular joint

Front 12

coracoclavicular ligament

Back 12

helps reinforce the joint by holding the bones together

Front 13

acromioclavicular ligament

Back 13

reinforce the joint capsule

Front 14

coracoacromial ligament

Back 14

roof over head of the humerus, serves as a protective arch

Front 15

scapulothoracic articulation

Back 15

not a true joint

scapula connected indirectly via the clavicle and several muscles

provides motion and flexiblity

Front 16

scapulohumeral rhythm

Back 16

the term used to describe the movement relationship between the shoulder girdle and shoulder joint

2 degree of shoulder abduction, the scapula upwardly rotates one degree

Front 17

angle of pull

Back 17

muscles only pull in one direction

Front 18

vertical pull

Back 18

elevating or depressing the scapula

Front 19

horizontal pull

Back 19

retract or protract the scapula

Front 20

diagonal pull

Back 20

cause motion in both planes

Front 21

5 primary muscles, all originate on trunk

Back 21

trapezius

levator scapulae

rhomboids

serratus anterior

pectoralis minor

Front 22

upper trapezius Origin

Back 22

Occipital protuberance and nuchal ligament

Front 23

upper trapezius insertion

Back 23

lateral clavicle and acromion process

Front 24

upper trapezius action

Back 24

scapular elevation

upward rotation of scapula

Front 25

upper trapezius nerve

Back 25

CN XI

11

Front 26

middle trapezius

Back 26

Front 27

middle trapezius origin

Back 27

spinous processes C7-T3

Front 28

middle trapezius insertion

Back 28

spine of the scapula

Front 29

middle trapezius action

Back 29

scapular retraction

Front 30

middle trapezius nerve

Back 30

CN XI

Front 31

lower trapezius

Back 31

Front 32

lower trapezius origin

Back 32

spinous processes of T4-T12

Front 33

lower trapezius insertion

Back 33

root of spine of scapula

Front 34

lower trapezius action

Back 34

scapular depression

upward rotation of scapula

Front 35

lower trapezius nerve

Back 35

CN XI

Front 36

levator scapula

Back 36

Front 37

levator scapula origin

Back 37

C1-C4 transverse processes

Front 38

levator scapula insertion

Back 38

vertebral border of scapula from the superior angle to root of spine

Front 39

levator scapula action

Back 39

elevation

downward rotation of scapula

Front 40

levator scapula nerve

Back 40

dorsal scapular nerve

Front 41

rhomboid major and minor

Back 41

Front 42

rhomboid origin

Back 42

spinous processes C7-T5

Front 43

rhomboid insertion

Back 43

vertebral border of scapula from root of spine to inferior angle

Front 44

rhomboid action

Back 44

scapular retraction

downward rotation

Front 45

rhomboid nerve

Back 45

dorsal scapular nerve

Front 46

pectoralis minor

Back 46

Front 47

pectoralis minor origin

Back 47

anterior surface ribs 3-5

Front 48

pectoralis minor insertion

Back 48

coracoid process of scapula

Front 49

pectoralis minor action

Back 49

depression

protraction

downward rotation of the scapula

Front 50

pectoralis minor nerve

Back 50

medial pectoral nerve

Front 51

force couple

Back 51

muscles pulling in different directions to produce rotation

Front 52

force couple for upward rotation

Back 52

upper trapezius - pulls up

lower trapezius - pulls down

serratus anterior - pulls out horizontally

Front 53

force couple for downward rotation

Back 53

levator scapulae - pulls up

rhomboids - pull in

pectoralis minor - pulls down

Front 54

muscle concentric contraction results in origin moving towards insertion, usually results when origin is fixed

Back 54

reversal of action

Front 55

elevators of the scapula

Back 55

upper trapezius

levator scapula

Front 56

depressors of the scapula

Back 56

pectoralis minor

lower trapezius

Front 57

protractors of the scapula

Back 57

pectoralis minor

serratus anterior

Front 58

retractors of the scapula

Back 58

middle trapezius

rhomboids

Front 59

upward rotators of the scapula

Back 59

upper trapezius

lower trapezius

serratus anterior

Front 60

downward rotators of the scapula

Back 60

levator scapula

rhomboids

pectoralis minor