Actions

Front 1

External Oblique

Back 1

Compresses abdomen and flexes vertebral column

Front 2

Internal Oblique

Back 2

Compresses abdomen and flexes vertebral column

Front 3

Transverse abdominis

Back 3

Compresses abdomin

Front 4

Rectus abdominis

Back 4

Flexes vertebral column and compresses abdomen

Front 5

Biceps Femoris

Back 5

Flexes leg and extends thigh

Front 6

Semitendinosis

Back 6

Flexes leg and extends thigh

Front 7

Semimembranosus

Back 7

Flexes leg and extends thigh

Front 8

Tensor fascia latta

Back 8

Flexes and abducts thigh

Front 9

Gastrocnemius

Back 9

Plantar flexes foot, flexes leg

Front 10

Vastus Lateralis

Back 10

Extends leg

Front 11

Vastus intermedius

Back 11

Extends leg

Front 12

Vastus medialis

Back 12

Extends leg

Front 13

Rectus femoris

Back 13

Extends leg, flexes thigh

Front 14

Sartorius

Back 14

Flexes leg, flexes, abducts and laterally rotates thigh

Front 15

Gracilis

Back 15

Abducts and medially rotates thigh

Front 16

Trapezius

Back 16

Superior:elevates scapula , helps extend head and rotates scapula

Middle:adducts scapula

Inferior:depresses and rotates scapula

Front 17

Levator Scapulae

Back 17

Elevates scapula and rotates it downward

Front 18

Rhomboids

Back 18

Elevates and adducts scapula

Front 19

Latissimus dorsi

Back 19

Extends, adducts and medially rotates arm

Front 20

Supraspinatus

Back 20

Assists deltoid muscle in abducting arm

Front 21

Infraspinatus

Back 21

Laterally rotates and adducts arm

Front 22

Supscapularus

Back 22

Medially rotates arm

Front 23

Teres major

Back 23

Extends arm and assists in adduction and medially rotation of arm

Front 24

Seratus anterior

Back 24

Abducts scapula and rotates it upward

Front 25

Triceps brachia

Back 25

Extends forearm and extends arm

Front 26

Teres minor

Back 26

Laterally rotates, extends and adducts arm

Front 27

Deltoid

Back 27

Abducts, flexes, extends and rotates arm

Front 28

Biceps brachia

Back 28

Flexes and supinates forearm, flexes arm

Front 29

Brachialis

Back 29

Flexes forearm

Front 30

Coracobrachialis

Back 30

Flexes and adducts arm

Front 31

Masseter

Back 31

Elevates mandible

Front 32

Digastric

Back 32

Elevates hyoid bone and depresses mandible

Front 33

Mylohyoid

Back 33

Elevates hyoid bone and floor of mouth and depresses mandible

Front 34

Geniohyoid

Back 34

Elevates hyoid bone and depresses mandible

Front 35

Sternohyoid

Back 35

Depresses hyoid bone

Front 36

Sternothyroid

Back 36

Depresses thyroid, cartilage of larynx

Front 37

Thyrohyoid

Back 37

Elevates thyroid cartilage and depresses hyoid bone

Front 38

Sternoclydomastoid

Back 38

Flexes cervical portion of vertebral column , flexes head, and elevates sternum during forced inhalation

Front 39

Diaphragm

Back 39

Draws central tendon downwards

Front 40

Pectoralis major

Back 40

Flexes, adducts and medially rotates arm

Front 41

Pectoralis minor

Back 41

Abducts and rotates scapula downward

Front 42

External Intercostals

Back 42

Elevates and outwardly rotates ribs, accessory of inspiration

Front 43

Internal intercostals

Back 43

Draws adjacent ribs together during forced expiration