Muscle Groups

Front 1

Sternocleidomastoid

Back 1

Head and Trunk

cervical flexion (together)
rotate opposite side (singly)

Front 2

Rectus Abdominis

Back 2

Muscle of Abdomen

compress abdomen
flexes vertebral column

Front 3

External Oblique

Back 3

Muscle of Abdomen

compress abdomen (together)
laterally flex vertebral column (singly)

Front 4

Internal Oblique

Back 4

Muscle of Abdomen

compress abdomen (together)
laterally flex vertebral column (singly)

Front 5

Transversus Abdominis

Back 5

Muscle of Abdomen

compress abdomen

Front 6

Diaphragm

Back 6

Muscle used in Breathing

pulls central tendon increase thorax length during inspiration(length of abdomen/chest cavity expands)

Front 7

External Intercostals

Back 7

Muscle used in Breathing

elevates ribs, increases thorax lateral & anteroposterior

Front 8

Internal Intercostals

Back 8

Muscle used in Breathing

depresses ribs, decreases thorax lateral & anteroposterior

Front 9

Trapezius

Back 9

Posterior Thoracic Muscle

elevate clavicle & head, adduct-rotate-elevate-depress scapula

-shrugging, shoulders forward and back

Front 10

Rhomboideus Major

Back 10

Posterior Thoracic Muscle

adduct scapula (pushes shoulder back) & rotate down

-the Rhomboideus minor is superior to the Major

Front 11

Levator scapulae

Back 11

Posterior Thoracic Muscle

elevates scapula & rotates down

Front 12

Erector Spinae

Back 12

Posterior Back Muscle

(ILS…from lateral to medial…I=Illiocostalis, L=Longissimus, S= Spinalis)

-largest muscles of the back

Front 13

Pectoralis Major

Back 13

Axial Muscle that moves the Humerus

flex-medial rotates- adducts humerus

-main action is flexing the arm

Front 14

Latissimus Dorsi

Back 14

Axial Muscle that moves the Humerus

extends-adducts-medial rotates humerus

-main action is extending the arm

Front 15

Deltoid

Back 15

Scapular Muscle that moves the Humerus

abduct-flex-extend-medial & laterally rotate humerus

-can do everything but adduct

Front 16

Supraspinatus

Back 16

Scapular Muscle that moves the Humerus

abduct

Front 17

Teres Major

Back 17

Scapular Muscle that moves the Humerus

extend-adduct-medially rotates humerus

Front 18

Teres Minor

Back 18

Scapular Muscle that moves the Humerus

extend-adduct-laterally rotates humerus

Front 19

Biceps Brachii

Back 19

Flexor Muscle of Forearm

flex humerus, flex-supinate forearm

Front 20

Triceps Brachii

Back 20

Extensor Muscle of Forearm

extends forearm & humerus

Front 21

Rotator Cuff

Back 21

Extensor Muscle of Forearm

"SITS" (supraspinatus, infraspinatus, teres minor, subscapularis)

Front 22

Head and Trunk Muscle

Back 22

Sternocleidomastoid

Front 23

Muscles of Abdomen

Back 23

Rectus Abdominis
External Oblique
Internal Oblique
Transversus Abdominis

Front 24

Muscles used in Breathing

Back 24

Diaphragm
External Intercostals
Internal Intercostals

Front 25

Posterior Thoracic Muscles

Back 25

Trapezius
Rhomboideus Major
Levator scapulae

Front 26

Posterior Back Muscles

Back 26

Erector Spinae

Front 27

Axial Muscles that move the Humerus

Back 27

Pectoralis Major
Latissimus Dorsi

Front 28

Scapular Muscles that move the Humerus

Back 28

Deltoid
Supraspinatus
Teres Major
Teres Minor

Front 29

Flexor Muscles of Forearm

Back 29

Biceps Brachii
Brachialis
Brachioradialis

Front 30

Extensor Muscles of Forearm

Back 30

Triceps Brachii
Pronator Teres
Rotator Cuff

Front 31

Muscles that move the Femur

Back 31

Psoas Major
Gluteus Maximus
Gluteus Medius
Tensor Fasciae Latae

Front 32

Medial Compartment (thigh)

Back 32

Adductor Longus
Adductor Brevis
Gracillis

Front 33

Anterior compartment (thigh)

Back 33

Quadriceps Femoris
Rectus Femoris
Vastus Lateralis
Vastus Medialis
Vastus Intermedius
Sartorius

Front 34

Posterior compartment (thigh)

Back 34

Biceps Femoris
Semitendinosus
Semimembranosus