Axial Muscles

Front 1

Biceps brachii - origin

Back 1

scapula

Front 2

Biceps brachii - insertion

Back 2

radial tuberosity

Front 3

Biceps brachii - action

Back 3

flexes forearm, supination of forearm, flexes arm

Front 4

Brachialis - origin

Back 4

humerus

Front 5

Brachialis - insertion

Back 5

ulna

Front 6

Brachialis - action

Back 6

primary flexor of forearm

Front 7

Brachioradialis - origin

Back 7

humerus

Front 8

Brachioradialis - insertion

Back 8

radius

Front 9

Brachioradialis - action

Back 9

flexes forearm

Front 10

Muscles that flex the forearm

Back 10

Biceps brachii, brachioradialis, brachialis

Front 11

Triceps brachii - origin

Back 11

Scapula, humerus, humerus (long, lateral, medial head)

Front 12

Triceps brachii - insertion

Back 12

Olecrannon (elbow) of ulna

Front 13

Triceps brachii - action

Back 13

Primary extensor of forearm - also extends/adducts arm

Front 14

Anconeus - origin

Back 14

Humerus

Front 15

Anconeus - insertion

Back 15

Olecrannon (elbow) of ulna

Front 16

Anconeus - action

Back 16

Extends forearm

Front 17

Muscles that extend forearm

Back 17

Triceps brachii, anconeus

Front 18

Muscles that move the pectoral girdle that originate on the axial skeleton

Back 18

Latissimus dorsi and pectoralis major

Front 19

Latissimus dorsi - origin

Back 19

T7-T12, iliac crest, thoracolumbar fascia

Front 20

Latissimus dorsi - insertion

Back 20

humerus

Front 21

Latissimus dorsi - action

Back 21

agonist of arm extension - swimmer's muscle (adduction and medial rotation)

Front 22

Pectoralis major - origin

Back 22

clavical, costal cartilage of ribs 2-6, sternum

Front 23

Pectoralis major - insertion

Back 23

humerus

Front 24

Pectoralis major - action

Back 24

Agonist of arm flexion, adducts and medially rotates arm

Front 25

Deltoid - origin

Back 25

clavicle, scapula

Front 26

Deltoid - insertion

Back 26

Humerus (deltoid tuberosity)

Front 27

Deltoid - action

Back 27

flex arm, medially rotate arm, abduct arm, extend arm, laterally rotate arm

Front 28

Coracobrachailis - origin

Back 28

coracoid process of scapula

Front 29

Coracobrachialis - insertion

Back 29

shaft of humerus

Front 30

Coracobrachialis - action

Back 30

adducts and flexes arm

Front 31

Muscles that originate on the scapula

Back 31

Deltoid, Coracobrachialis, Teres major, triceps brachii, biceps brachii, subscapularis, supraspinatus, infraspinatus, teres minor

Front 32

Teres Major - origin

Back 32

scapula

Front 33

Teres major - insertion

Back 33

humerus

Front 34

Teres major - action

Back 34

extends, adducts, and medially rotates arm

Front 35

Triceps brachii - origin

Back 35

scapula

Front 36

Triceps brachii - insertion

Back 36

olecrannon process of ulna

Front 37

Triceps brachii - action

Back 37

extends/adducts arm

Front 38

Subscapularis - origin

Back 38

scapula

Front 39

Subscapularis - insertion

Back 39

humerus

Front 40

Subscapularis - action

Back 40

medially rotates arm

Front 41

Supraspinatus - origin

Back 41

scapuls

Front 42

Supraspinatus - insertion

Back 42

humerus

Front 43

Supraspinatus - action

Back 43

abducts arm

Front 44

Infraspinatus - origin

Back 44

scapula

Front 45

Infraspinatus - insertion

Back 45

humerus

Front 46

Infraspinatus - action

Back 46

adducts and laterally rotates arm

Front 47

Teres minor - origin

Back 47

scapul

Front 48

Teres minor - insertion

Back 48

humerus

Front 49

Teres minor - action

Back 49

adducts and laterally rotates arm (same as infraspinatus)

Front 50

Pectoralis minor - origin

Back 50

Ribs 3-5

Front 51

Pectoralis minor - insertion

Back 51

scapula

Front 52

Pectoralis minor - action

Back 52

protracts/depresses scapula