Montana State Practical 3- Muscle Orgin And Insertion

Front 1

gastrocemius

Back 1

origin: femur

insertion: calcaneus via calcaneal tendon

action: plantar flex foot

Front 2

flexor hallicus longus

Back 2

origin: fibula

Insertion: under great toe

action: flex great toe

Front 3

extensor hallicus longus

Back 3

origin: fibula

insertion: great toe

action: extend great toe

Front 4

flexor digitorum longus

Back 4

origin: posterior tibia

insertion: phalanges 2-5 of toes

action: flex toes, invert foot

Front 5

extensor digitorum longus

Back 5

origin: tibia

insertion: phalanges 2-5 of toes

action: extend toes

Front 6

tibialis posterior

Back 6

origin: tibia and fibula

insertion: metatarsal 2-4 of toes

action: inversion

Front 7

tibialis anterior

Back 7

origin: tibia

insertion: metatarsal 1

action: dorsiflexion

Front 8

fibularis brevis

Back 8

origin: fibula

insertion: metatarsal 5

action: plantar flex foot

Front 9

fibularis longus

Back 9

origin: fibula

insertion: metatarsal 1

action: plantar flex and evert foot

Front 10

semitendinosus

Back 10

origin: ischial tuberosity

insertion: tibia

action: extend thigh, flex knee

Front 11

biceps femoris

Back 11

origin: ischial tuberosity

insertion: fibula

action: extend thigh, flex knee

Front 12

piriformis

Back 12

origin: sacrum

insertion: femur

action: laterally rotate thigh

Front 13

gluteus minimus

Back 13

origin: ilium

insertion: femur

action: abduct and medially rotate thigh

Front 14

gluteus medius

Back 14

origin: ilium

insertion: femur

action: abduct and medially rotate thigh

Front 15

gluteus maximus

Back 15

origin: ilium

insertion: gluteal tuberosity

action: extend thigh

Front 16

vastus intermedius

Back 16

QUAD 4

origin: femur

insertion: tibial tuberosity

action: extend knee

Front 17

vastus medius

Back 17

QUAD 3

origin: linea aspera

insertion: tibial tuberosity

action: extend knee

Front 18

vastus lateralis

Back 18

QUAD 2

origin: femur

insertion: tibial tuberosity

action: extend knee

Front 19

rectus femoris

Back 19

QUAD 1

origin: iliac spine

insertion: tibial tuberosity

action: extend knee, flex thigh

Front 20

tensor fascia latae

Back 20

IT Band

origin: iliac crest

insertion: iliotibial tract (IT tract)

action: abduct, medially rotate thigh

Front 21

gracilis

Back 21

origin: inferior ramus of pubis

insertion: tibia

action: adduct thigh, medially rotate

Front 22

pectineus

Back 22

origin: pubis

insertion: femur

action: adduct, flex and medially rotate thigh

Front 23

adductor femoris group

Back 23

origin:
magnus- ischial/pubic rami
longus - pubis
brevis- ramus of pubis

insertion: linea aspera

action: adduct, medially rotate thigh

Front 24

sartorius

Back 24

origin: anterior superior iliac spine

insertion: tibia

action: flex, abduct and laterally rotate thigh

Front 25

iliopsoas group

Back 25

origin: iliac fossa

insertion: lesser trochanter of femur

action: flex trunk

Front 26

illiocostalis lumborum

Back 26

origin: sacrum or iliac crest

insertion: 6th to 7th rib

action: flex head and neck laterally

Front 27

errector spinae group

Back 27

origin: iliac crest

insertion: ribs

action: bend and extend vertebral column

Front 28

abductor pollicus longus

Back 28

origin: radius and ulna

insertion: metacarpal 1

action: abducts and extends thumb

Front 29

extensor pollicis brevis

Back 29

origin: ulna and radius

insertion: thumb

action: extends thumb

Front 30

extensor pollicis longus

Back 30

origin: ulna and radius

insertion: thumb

action: extend thumb

Front 31

extensor carpi ulnaris

Back 31

origin: humerus

insertion: metacarpal 5

action: extend and abduct the wrist

Front 32

extensor digitorum

Back 32

origin: humerus

insertion: 4 tendons into phalanges 2-5

action: moves fingers

Front 33

extensor carpi radialis

Back 33

origin: supracondylar ridge of humerus

insertion: metacarpal 2

action: extend and abduct wrist

Front 34

flexor pollicus longus

Back 34

origin: radius

insertion: phalanx of thumb

action: flexes thumb

Front 35

flexor digitorum superficialis

Back 35

origin: humerus

insertion: 2-5 phalanges

action: flexes wrist

Front 36

flexor capri ulnaris

Back 36

origin: humerus

insertion: metacarpal 5

action: adducts hand, flexes the wrist

Front 37

palmaris longus

Back 37

origin: humerus

insertion: fascia of palm

action: tense skin of palm

Front 38

flexor carpi radialis

Back 38

origin: humerus

insertion: 2 and 3 metacarpals

action: flex wrist and abducts hand

Front 39

pronator teres

Back 39

origin: medial epicondyle of humerus

insertion: radius

action: pronate forearm

Front 40

brachialis

Back 40

origin: humerus

insertion: ulna

action: flexor or elbow

Front 41

brachioradialis

Back 41

origin: humerus

insertion: radius

action: flexes elbow

Front 42

biceps brachii

Back 42

origin:
long- intertubercular sulcus
short- coracoid process

insertion: radial tuberosity

action: flexion of elbow, supination

Front 43

triceps brachii

Back 43

origin:
long- inferior glenoid
lateral- humerus
medial- radial groove

insertion: ulna

action: elbow extension

Front 44

rectus abdominus

Back 44

origin: pubic crest and symphysis

insertion: xyphoid process

action: flex and rotate vertebral column

Front 45

trapezius

Back 45

origin: occipital bone

insertion: acromion and spinous process

action: raise, rotate and retract scapula, adduct scapula

Front 46

insernal oblique

Back 46

origin: iliac crest

insertion: linea alba

action: compress abdominal wall

Front 47

diaphragm

Back 47

origin: inferior boarder of rib, sternum

insertion: central tendon

action: flattened during inhilation

Front 48

transverse abdomins

Back 48

origin: iliac crest

insertion: linea alba

action: compress abdominal components

Front 49

external oblique

Back 49

origin: pubic crest and symphysis

insertion: linea alba

action: compress abdominal wall, flex and rotate vertebral column

Front 50

supraspinatus

Back 50

origin: surpraspinus fossa

insertion: greater tuberacle of humerus

action: abduction of humerus

Front 51

teres minor

Back 51

origin: laterla margin of scapula

insertion: greater tuberacle of humerus

action: lateral rotation of humerus

Front 52

rhomboid group

Back 52

origin: spinus process of C7 and T1-5

insertion: medial boarder of scapula

action: stabilize scapula

Front 53

lavator scapulae

Back 53

origin: transverse processof C1-4

insertion: medial boarder of scapula

action: elevate and adduct scapula

Front 54

subscapularis

Back 54

origin: subscapular fossa

insertion: humerus

action: internally rotates

Front 55

infraspintus

Back 55

origin: infraspinous fossa

insertion: greater tuberabcle of humerus

action: lateral rotation

Front 56

teres major

Back 56

origin: scapula

insertion: intertubercular sulcus of humerus

action: medial rotation and adduction

Front 57

latissimus dosi

Back 57

origin: iliac crest

insertion: intertubercular sulcus of humerus

action: adduction and medial rotation

Front 58

Pectoralis minor

Back 58

origin: anterior surface of ribs 3-5

insertion: coracoid process of scapula

action: draw scapula forward and inferior

Front 59

internal intercostals

Back 59

origin: superior boarder of rib below

insertion: inferior boarder of rib above

action: draw ribs together- depress rib cage

Front 60

deltoid

Back 60

origin: lateral surface 1/3 of clavicle

insertion: deltoid tuberosity

action: abduction of arm

Front 61

serratus anterior

Back 61

origin: lateral aspect of ribs 1-8

insertion: scapula

action: protract and hold scapula to chest wall

Front 62

pectoralis major

Back 62

origin: calvicle

insertion: intertubercular sulcus of humerus

action: flexion of arm, adduction and medial rotation

Front 63

external intercostals

Back 63

origin: inferior boarder of ribs above

insertion: superior boarder of rib below

action: elevates rib cage

Front 64

zygomaticus major

Back 64

origin: zygomatic bone

insertion: skin and muscles at mouth

action: raises lateral corners of mouth

Front 65

masseter

Back 65

origin: zygomatic arch

insertion: angle of ramus

action: jaw closure

Front 66

buccinator

Back 66

origin: maxilla

insertion: orbicularis oris

action: compress cheeks

Front 67

depressor labii inferioris

Back 67

origin: body of mandible

insertion: skin of lower lip

action: draw upper lip inferior

Front 68

platysma

Back 68

origin: fascia of chest

insertion: lower margin of mandible

action: tense skin of neck

Front 69

sternohyoid

Back 69

origin: manibrium

insertion: hyoid bone

action: depress hyoid

Front 70

sternocleidomastoid

Back 70

origin: sternum

insertion: mastoid

action: flexion of neck

Front 71

omohyoid

Back 71

origin: scapula

insertion: hyoid

action: depress hyoid

Front 72

thyrohyoid

Back 72

origin: thyroid

insertion: hyoid

action: depress hyoid

Front 73

digastric

Back 73

origin: mandible

insertion: hyoid bone

action: open mouth, depress mandible

Front 74

mylohyoid

Back 74

origin: mandible

insertion: hyoid

action: elebate hyoid

Front 75

temporalis

Back 75

origin: temporal fossa

insertion: coronoid process of mandible

action: closes jaw

Front 76

epicranius (occipital belly)

Back 76

origin: occipital and temporal bones

insertion: galea aponeruotica

action: raises eyebrows

Front 77

obicularis oris

Back 77

origin: mandible and maxilla

insertion: muscle of skin at angle of mouth

action: close lips

Front 78

obicularis occuli

Back 78

origin: frontal and maxilla

insertion: tissue of eyelid

action: close eyelid

Front 79

epicranius (frontal belly)

Back 79

origin: galea aponerurotica

insertion: skin of eyebrows

action: raise eyebrows

Front 80

semimembranousus

Back 80

origin: ischial tuberosity

insertion: tibia

action: extend thigh, flex knee

Front 81

supinator

Back 81

origin: humerus

insertion: radius

action: supinate forearm