Muscle Insertions And Origins

Front 1

Masseter

Back 1

O- Zygomatic arch

I- Mandible

Front 2

Temporalis

Back 2

O- temporal bone

I- coronoid process & ramus of the mandible

Front 3

orbicularis oculi

Back 3

O- medial wall of orbit, frontal, and maxillary bones

I- circular path around orbit

Front 4

orbicularis oris

Back 4

O- muscle fibers surrounding opening of mouth

I- skin at corner of mouth

Front 5

levator palpebrae superioris

Back 5

O- root of orbit (lesser wing of sphenoid bone)

I- skin of upper eyelid

Front 6

digastric

Back 6

O- temporal bone, mandible

I- hyoid bone

Front 7

mylohyoid

Back 7

O- mandible

I- hyoid bone

Front 8

omohyoid

Back 8

O- superior border of scapula

I- body of hyoid bone

Front 9

sternocleidomastoid

Back 9

O- clavicle and manubrium of sternum

I- mastoid process of the temporal bone

Front 10

sternohyoid

Back 10

O- clavicle and manubrium of sternum

I- hyoid bone

Front 11

stylohyoid

Back 11

O- styloid process of temporal bone

I- hyoid bone

Front 12

scalenes

Back 12

O- transverse process of C1- C7

I- first and second ribs

Front 13

sternothyroid

Back 13

O- sternum

I- thyroid cartilage of larynx

Front 14

thyrohyoid

Back 14

O- thyroid cartilage of larynx

I- hyoid bone

Front 15

platysma

Back 15

O- pectoralis major & deltoid fascia

I- mandible, muscles around mouth, and lower face

Front 16

erector spinae
(iliocostalis, longissimus, and spinalis)

Back 16

O- nuchal ligament, ribs 3-12, t & l vertebrae, sacrum, thoracolumnar fascia

I- mastoid process, c & t vertebrae, all ribs

Front 17

latissimus dorsi

Back 17

O- T6-T12, all lumbar vertebrae, sacrum, illium and inferior 4 ribs

I- intertubercular groove of humerus

Front 18

trapezius

Back 18

O- occipital bone and spines of C7 and all thoracic vertebrae

I- spine of scapula, acromion, lateral 1/a3 of clavicle

Front 19

rhomboideous major

Back 19

O- spinous processes of T2-T5

I- medial border of scapula

Front 20

rhomboideous minor

Back 20

O- spinous processes of C7 & T1

I- medial border border of scapula

Front 21

external intercostals

Back 21

O- ribs 5-12

I- illiac crest, pubic symphysis, superior pubis

Front 22

internal intercostals

Back 22

O- thoracolumnar fascia, iliac crest, inguinal ligament

I- ribs 10-12, costal cartilage 7-10, pubis

Front 23

rectus abdominus

Back 23

O- pubic crest and symphysis

I- xiphoid processs of sternum, linea alba, and pubis

Front 24

linea alba

Back 24

O- sternum

I- pubic symphysis

Front 25

diaphragm

Back 25

O= xiphoid process of sternum, ribs 7-12, lumbar vertebra

I- central tendon of diaphragm

Front 26

external intercostals

Back 26

O- inferior margin of ribs 1-11

I- superior margin of next lower rib

Front 27

internal intercostals

Back 27

O- superior ribs 2-12 and margin of sternum

I- inferior margin of next higher rib

Front 28

pectoralis major

Back 28

O- medial clavicle, costal cartilage (costals 1-7), aponeurosis of external obliques

I- intertubercle groove of humerus

Front 29

pectoralis minor

Back 29

O- anterior ribs 3-5

I- coracoid process of scapula

Front 30

serratus anterior

Back 30

O- all or nearly all ribs

I- medial border of scapula

Front 31

anconeus

Back 31

O- lateral epicondyle of humerus

I- olecranon process of ulna

Front 32

biceps brachii

Back 32

O- scapula

I- radius

Front 33

brachialis

Back 33

O- anterior humerus

I- coronoid process of ulna

Front 34

brachioradialis

Back 34

O- lateral distal humerus

I- near styloid process of radius

Front 35

coracobrachialis

Back 35

O- coracoid process of scapula

I- medial mid-humerus

Front 36

deltoid

Back 36

O- clavicle and scapula

I- deltoid tuberosity of humerus

Front 37

infraspinatus

Back 37

O- infraspinous fossa of scapula

I- greater tubercle of humerus

Front 38

levator scapulae

Back 38

O- C1-C4

I- superior angle and medial border of scapula

Front 39

subscapularis

Back 39

O- subscapular fossa of scapula

I- lesser tubercle of humerus

Front 40

supraspinatus

Back 40

O- supraspinous fossa of scapula

I- greater tubercle of humerus

Front 41

teres major

Back 41

O- inferior angle of scapula

I- intertubercular groove of humerus

Front 42

teres minor

Back 42

O- lateral posterior scapula

I- greater tubercle of humerus

Front 43

triceps brachii

Back 43

O- humerus and scapula

I- olecranon process of ulna

Front 44

abductor pollicis longus

Back 44

O- radius and ulna

I- trapezium and first metacarpal

Front 45

extensor carpi radialis longus

Back 45

O- humerus

I- second metacarpal

Front 46

extensor carpi radialis brevis

Back 46

O- humerus

I- third metacarpal

Front 47

extensor carpi ulnaris

Back 47

O- humerus and ulna

I- fifth metacarpal

Front 48

extensor digitorum

Back 48

O- humerus

I- distal phalanx of philanges 2-5

Front 49

extensor pollicis brevis

Back 49

O- radius

I- proximal phalanx of the pollex

Front 50

extensor pollicis longus

Back 50

O- ulna

I- distal phalanx of the pollex

Front 51

flexor carpi radialis

Back 51

O- epicondyle of humerus

I- second and third metacarpals

Front 52

flexor carpi ulnaris

Back 52

O- humerus and ulna

I- pisiform, hamate, fifth metacarpal anteriority

Front 53

flexor digitorum profundus

Back 53

O- ulna

I- distal phalanges 2-5

Front 54

flexor digitorum superficialis

Back 54

O- humerus

I- middle phalanges of 2-5

Front 55

flexor pollicis longus

Back 55

O- anterior radius

I- distal phalanx of pollex

Front 56

palmaris longus

Back 56

O- humerus

I- palmar fascia

Front 57

pronator teres

Back 57

O- humerus and ulna

I- radius

Front 58

pronator quadratus

Back 58

O- anterior distal ulna

I- anterior distal radius

Front 59

supinator

Back 59

O- upper ulna and humerus

I- upper radius

Front 60

adductor brevis

Back 60

O- inferior ramus of pubis

I- linea aspera of femur

Front 61

adductor longus

Back 61

O- inferior ramus of pubis

I- linea aspera of femur

Front 62

adductor magnus

Back 62

O- inferior pubis and ischium

I- adductor tubercle and linea aspera of femur

Front 63

biceps femoris

Back 63

O- ischial tuberosity and linea aspera of femur

I- fibula

Front 64

gluteus maximus

Back 64

O- iliac crest (ilium), sacrum, coccyx

I- gluteal tuberosity of femur, iliotibial band

Front 65

gluteus medius

Back 65

O- iliac crest (ilium)

I- greater trochanter of femur

Front 66

gluteus minimus

Back 66

O- gluteal lines on posterior ilium

I- greater trochanter of femur

Front 67

gracilis

Back 67

O- inferior ramus of pubis

I- tibia

Front 68

iliopsoas
(iliacus and psoas major)

Back 68

O- ilium and T12-L5

I- iliacus and lesser trochanter of femur

Front 69

psoas major

Back 69

O- bodies and interbertebral discs of T12-L5

I- lesser trochanter of femur

Front 70

pectineus

Back 70

O- superior ramus of pubis

I- femur

Front 71

rectus femoris

Back 71

O- anterior inferior iliac spine, superior part of acetabulum

I- patella and tibia

Front 72

sartorius

Back 72

O- anterior superior iliac spine (ilium)

I- tibia

Front 73

semimembranosus

Back 73

O- ischial tuberosity (ischium)

I- tibia

Front 74

semitendonosus

Back 74

O- ischial tuberosity (ischium)

I- tibia

Front 75

tensor fasciae latae

Back 75

O- iliac crest (ilium) and anterior superior iliac spine

I- iliotibial tract

Front 76

vastus intermedius

Back 76

O- femur

I- tibia and patella

Front 77

vastus medialis

Back 77

O- femur

I- tibia and patella

Front 78

vastus lateralis

Back 78

O- femur

I- tibia and patella

Front 79

extensor digitorum longus

Back 79

O- tibia and fibula

I- phalanges 2-5

Front 80

extensor hallucis longus

Back 80

O- fibula

I- hallux

Front 81

fibularis (peroneus) brevis

Back 81

O- fibula

I- fifth metatarsal

Front 82

fibularis (peroneus) longus

Back 82

O- fibula and tibia

I- first metatarsal and cuneiform

Front 83

gastrocnemius

Back 83

O- femur

I- calcaneus

Front 84

soleus

Back 84

O- fibula and tibia

I- calcaneus

Front 85

tibialis anterior

Back 85

O- tibia

I- first metatarsal and cuneiform