Shoulder And Arm

Front 1

Deltoid Action of All fibers

Back 1

Abducts the shoulder (glenohumeral joint)

Front 2

Deltoid Action of Anterior fibers

Back 2

Flexes the shoulder (g/h joint)

Medially rotates the shoulder (g/h joint)

Horizontally adducts the shoulder (g/h joint)

Front 3

Deltoid Action of Posterior fibers

Back 3

Extends the shoulder (g/h joint)

Laterally rotates the shoulder (g/h joint)

Horizontally abducts the shoulder (g/h joint)

Front 4

Deltoid Origin

Back 4

Lateral one-third of clavicle, acromion and spine of scapula

Front 5

Deltoid Insertion

Back 5

Deltoid tuberosity

Front 6

Deltoid Nerve Innervation

Back 6

Axillary from brachial plexus

Front 7

Trapezius Action of upper fibers - Bilaterally

Back 7

Extends the head and neck

Front 8

Trapezius Action of upper fibers - Unilaterally

Back 8

Laterally flex the head and neck to the same side

Rotates the head and neck to the opposite side

Elevates the scapula (scapulothoracic joint)

Upwardly rotates the scapula (s/t joint)

Front 9

Trapezius Action of middle fibers

Back 9

Adducts the scapula (s/t joint)

Stabilizes the scapula (s/t joint

Front 10

Trapezius Action of lower fibers

Back 10

Depresses the scapula (s/t joint)

Upwardly rotates the scapula (s/t joint)

Front 11

Trapezius Origin

Back 11

External occipital protuberance

Medial portion of superior nuchal line of the occiput

Ligamentum nuchae

Spinous processes of C-7 through T-12

Front 12

Trapezius Insertion

Back 12

Lateral one-third of clavicle

Acromion

Spine of the scapula

Front 13

Trapezius Nerve Insertion

Back 13

Spinal accessory

Cervical Plexus

Front 14

Latissimus Dorsi Action

Back 14

Extends the shoulder (glenohumeral joint)

Adducts the shoulder (g/h joint)

Medially rotates the shoulder (g/h joint)

Front 15

Latissimus Dorsi Origin

Back 15

Spinous processes of last six thoracic vertebrae

Last three or four ribs

Thoracolumbar aponeurosis

Posterior iliac crest

Front 16

Latissimus Dorsi Insertion

Back 16

Crest of the lesser tubercle of the humerus

Front 17

Latissimus Dorsi Nerve Innervation

Back 17

Thoracodorsal

Front 18

Teres Major Action

Back 18

Extends the shoulder (glenohumeral joint)

Adducts the shoulder (glenohumeral joint)

Medially rotates the shoulder (g/h joint)

Front 19

Teres Major Origin

Back 19

Lateral side of inferior angle of scapula

Lower half of lateral border of the scapula

Front 20

Teres Major Insertion

Back 20

Crest of the lesser tubercle of the humerus

Front 21

Teres Major Nerve Innervation

Back 21

Lower subscapular

Front 22

Supraspinatus Action

Back 22

Abducts the shoulder (glenohumeral joint)

Stabilizes the head of humerus in glenoid cavity

Front 23

Supraspinatus Origin

Back 23

Suptraspinous fossa of the scapula

Front 24

Supraspinatus Insertion

Back 24

Greater tubercle of the humerus

Front 25

Supraspinatus Nerve Innervation

Back 25

Suprascapular

Front 26

Teres Minor Action

Back 26

Laterally rotates the shoulder (glenohumeral joint)

Adducts the shoulder (g/h joint)

Extends the shoulder (g/h joint)

Horizontally abducts the shoulder (g/h joint)

Stabilizes the head of humerus in glenoid cavity

Front 27

Teres Minor Origin

Back 27

Superior half of lateral border of the scapula

Front 28

Teres Minor Insertion

Back 28

Greater tubercle of the humerus

Front 29

Nerve Innervation

Back 29

Axillary

Front 30

Infraspinatus Action

Back 30

Laterally rotates the shoulder (glenohumeral joint)

Adducts the shoulder (g/h joint)

Extends the shoulder (g/h joint)

Horizontally abducts the shoulder (g/h joint)

Stabilizes the head of humerus in glenoid cavity

Front 31

Infraspinatus Origin

Back 31

Infraspinous fossa of the scapula

Front 32

Infraspinatus Insertion

Back 32

Greater tubercle of the humerus

Front 33

Infraspinatus Nerve Innervation

Back 33

Suprascapular

Front 34

Subscapularis Action

Back 34

Medially rotates the shoulder (glenohumeral joint)

Stabilizes the head of humerus in glenoid cavity

Front 35

Subscapularis Origin

Back 35

Subscapular fossa of the scapula

Front 36

Subscapularis Insertion

Back 36

Lesser tubercle of the humerus

Front 37

Subscapularis Nerve Innervation

Back 37

Upper and lower subscapular

Front 38

Rhomboid Major Action

Back 38

Adducts the scapula (scapulothoracic joint)

Elevates the scapula (s/t joint)

Downwardly rotates the scapula (s/t joint)

Front 39

Rhomboid Major Origin

Back 39

Spinous processes of T-2 to T-5

Front 40

Rhomboid Minor Origin

Back 40

Spinous processes of C-7 and T-1

Front 41

Rhomboid Major Insertion

Back 41

Medial border of the scapula between the spine of the scapula and inferior angle

Front 42

Rhomboid Minor Insertion

Back 42

Upper portion of medial border of the scapula, across from spine of the scapula

Front 43

Rhomboid Major Nerve Innervation

Back 43

Dorsal Scapular from brachial plexus

Front 44

Levator scapula Action - Unilaterally

Back 44

Elevates the scapula (scapulothoracic joint)

Downwardly rotates the scapula (s/t joint)

Laterally flexes the head and neck

Rotates the head and neck to the same side

Front 45

Levator scapula Action - Bilaterally

Back 45

Extend the head and neck

Front 46

Levator scapula Origin

Back 46

Transverse processes of first through fourth cervical vertebrae

Front 47

Levator scapula Insertion

Back 47

Upper region of medial border and superior angle of scapula

Front 48

Levator scapula Nerve Innervation

Back 48

Dorsal scapular and cervical nerves

Front 49

Serratus Anterior Actions with the origin fixed

Back 49

Abducts the scapula (scapulothoracic joint)

Depresses the scapula (s/t joint)

Holds the medial border of the scapula against the rib cage

Front 50

Serratus Anterior Actions if scapula is fixed

Back 50

May act in forced inhalation

Front 51

Serratus Anterior Origin

Back 51

Surfaces of upper eight of nine ribs

Front 52

Serratus Anterior Insertion

Back 52

Anterior surface of medial border of the scapula

Front 53

Serratus Anterior Nerve Innervation

Back 53

Long thoracic

Front 54

Pectoralis Major Action of all fibers

Back 54

Adducts the shoulder (glenohumeral joint)

Medially rotates the shoulder (g/h joint)

Assists in elevating the thorax in forced inhalation (if arm is fixed)

Front 55

Pectoralis Major Action of upper fibers

Back 55

Flexes the shoulder (g/h joint)

Horizontally adducts the shoulder (g/h joint)

Front 56

Pectoralis Major Action of lower fibers

Back 56

Extends the shoulder (g/h joint)

Front 57

Pectoralis Major Origin

Back 57

Medial half of clavicle

Sternum

Cartilage of first through sixth ribs

Front 58

Pectoralis Major Insertion

Back 58

Crest of greater tubercle of humerus

Front 59

Pectoralis Major Nerve Innervation

Back 59

Medial and lateral pectoral

Front 60

Pectoralis Minor Action

Back 60

Depresses the scapula (scapulothoracic joint)

Abducts the scapula (s/t joint)

Tilts the scapula anteriorly (s/t joint)

if scapula is fixed: assists in forced inhalation

Front 61

Pectoralis Minor Origin

Back 61

Third, Fourth, and Fifth ribs

Front 62

Pectoralis Minor Insertion

Back 62

Coracoid process of the scapula

Front 63

Pectoralis Minor Nerve Innervation

Back 63

Medial pectoral

Front 64

Subclavius Action

Back 64

Draws clavicle inferiorly

Elevates first rib (to assist in inhalation)

Stabilizes the sternoclavicular joint

Front 65

Subclavius Origin

Back 65

First rib and cartilage

Front 66

Subclavius Insertion

Back 66

Inferior, lateral aspect of the clavicle

Front 67

Subclavius Nerve Innervation

Back 67

Subclavian

Front 68

Biceps Brachii Action

Back 68

Flexes the elbow (humeroulnar joint)

Supinates the forearm (radioulnar joints)

Flexes the shoulder (glenohumeral joints)

Front 69

Biceps Brachii Origin - Short head

Back 69

Coracoid process of scapula

Front 70

Biceps Brachii Origin - Long head

Back 70

Supraglenoid tubercle of scapula

Front 71

Biceps Brachii Insertion

Back 71

Tuberosity of the radius and aponeurosis of the biceps brachii

Front 72

Biceps Brachii Nerve Innervation

Back 72

Musculocutaneous

Front 73

Triceps Brachii Action of all heads

Back 73

Extends the elbow (humeroulnar joint)

Front 74

Triceps Brachii Action of long head

Back 74

Extends the shoulder (glenohumeral joint)

Adducts the shoulder (g/h joint)

Front 75

Triceps Brachii Origin - long head

Back 75

Infraglenoid tubercle of the scapula

Front 76

Triceps Brachii Origin - lateral head

Back 76

Posterior surface of proximal half of the humerus

Front 77

Triceps Brachii Origin - medial head

Back 77

Posterior surface of distal half of the humerus

Front 78

Triceps Brachii Insertion

Back 78

Olecranon process of the ulna

Front 79

Triceps Brachii Nerve Innervation

Back 79

Radial

Front 80

Coracobrachialis Action

Back 80

Flexes the shoulder (glenohumeral joint)

Adducts the shoulder (g/h joint)

Front 81

Coracobrachialis Origin

Back 81

Coracoid process of the scapula

Front 82

Coracobrachialis Insertion

Back 82

Medial surface of mid-humeral shaft

Front 83

Coracobrachilalis Nerve Innervation

Back 83

Musculocutaneous