Muscles Of The Human Body

Front 1

origin of epicraneus frontalis

Back 1

epicranial aponeurosis

Front 2

insertion of epicraneus frontalis

Back 2

skin of eyebrows and root of nose

Front 3

action of epicraneus frontalis

Back 3

raises the eyebrows

Front 4

origin of orbicularis oculi

Back 4

frontal and maxillary bones & ligaments around orbit

Front 5

insertion of orbicularis oculi

Back 5

tissue of eyelid

Front 6

action of orbicularis oculi

Back 6

closes eye, blinking and squinting

Front 7

origin of orbicularis oris

Back 7

indirectly from maxilla and mandible fibers, blends with fibers of other muscles

Front 8

insertion of orbicularis oris

Back 8

encircles mouth, inserts into muscle and skin at angles of mouth

Front 9

action of orbicularis oris

Back 9

closes lips, kissing & whistling

Front 10

origin of levator labii superioris

Back 10

zygomatic bone and infraorbital margin of maxilla

Front 11

insertion of levator labii superioris

Back 11

skin and muscle of upper lip

Front 12

action of levator labii superioris

Back 12

opens lips

Front 13

origin of zygomaticus minor

Back 13

zygomatic bone

Front 14

insertion of zygomaticus minor

Back 14

skin and muscle at corner of mouth

Front 15

action of zygomaticus minor

Back 15

raises lateral corners of mouth upward (smiling)

Front 16

origin of zygomaticus major

Back 16

zygomatic bone

Front 17

insertion of zygomaticus major

Back 17

skin and muscle at corner of mouth

Front 18

action of zygomaticus major

Back 18

raises lateral corners of mouth upward (smiling)

Front 19

origin of the buccinator

Back 19

molar region of maxilla and mandible

Front 20

insertion of the buccinator

Back 20

orbicularis oris

Front 21

action of the buccinator

Back 21

compresses cheek (whistling & sucking)

Front 22

origin of the mentalis

Back 22

mandible below incisors

Front 23

insertion of the mentalis

Back 23

skin of chin

Front 24

action of the mentalis

Back 24

wrinkles chin

Front 25

origin of depressor labii inferioris

Back 25

body of mandible lateral to its midline

Front 26

insertion of depressor labii inferioris

Back 26

skin and muscle of lower lip

Front 27

action of depressor labii inferioris

Back 27

draws lower lip inferiorly (pouting)

Front 28

origin of depressor anguli oris

Back 28

body of mandible below incisors

Front 29

insertion of depressor anguli oris

Back 29

skin and muscle at angle of mouth below insertion of zygomaticus

Front 30

action of depressor anguli oris

Back 30

draws corners of mouth down and laterally

Front 31

origin of the platysma

Back 31

fascia of chest (over pectoral muscles and deltoid)

Front 32

insertion of the platysma

Back 32

lower margin of mandible, and skin & muscle at corner of mouth

Front 33

action of the platysma

Back 33

tenses skin of neck (as during shaving)

Front 34

origin of temporalis

Back 34

temporal fossa

Front 35

insertion of temporalis

Back 35

coronoid process of mandible

Front 36

action of temporalis

Back 36

closes jaw

Front 37

origin of masseter

Back 37

zygomatic arch and zygomatic bone

Front 38

insertion of masseter

Back 38

angle and ramus of mandible

Front 39

action of masseter

Back 39

prime mover of jaw closure

Front 40

origin of lateral pterygoid

Back 40

greater wing and lateral pterygoid plate of sphenoid bone

Front 41

insertion of lateral pterygoid

Back 41

condylar process of mandible and capsule of temporomandibular joint

Front 42

action of lateral pterygoid

Back 42

provides forward siding and grinding movements of lower teeth

Front 43

origin of medial pterygoid

Back 43

medial surface of plate of sphenoid bone, maxilla, and palatine bone

Front 44

insertion of medial pterygoid

Back 44

medial surface of mandible near its angle

Front 45

action of medial pterygoid

Back 45

protrudes the mandible, grinding movements

Front 46

origin of sternocleidomastoid

Back 46

manubrium of sternum & medial portion of clavicle

Front 47

insertion of sternocleidomastoid

Back 47

mastoid process of temporal bone & superior nuchal line of occipital bone

Front 48

action of sternocleidomastoid

Back 48

flexes and laterally rotates the head

Front 49

origin of deltoid

Back 49

insertion of trapezius, clavicle, acromion

Front 50

insertion of deltoid

Back 50

deltoid tuberosity of humerus

Front 51

action of deltoid

Back 51

arm abduction

Front 52

origin of pectoralis major

Back 52

sternal end of clavicle, sternum

Front 53

insertion of pectoralis major

Back 53

greater tubercle of humerus

Front 54

action of pectoralis major

Back 54

arm flexion, rotates arm medially, adducts arm

Front 55

origin of trapezius

Back 55

occipital bone, all thoracic vertebrae

Front 56

insertion of trapezius

Back 56

along acromion & spine of scapula

Front 57

action of trapezius

Back 57

stabilizes, raises, retracts, and rotates scapula

Front 58

origin of latissimus dorsi

Back 58

lower 6 thoracic vertebrae, lower 3-4 ribs

Front 59

insertion of latissimus dorsi

Back 59

teres major into floor of intertubercular sulcus of humerus

Front 60

action of latissimus dorsi

Back 60

arm extension, arm adductor

Front 61

origin of biceps brachii

Back 61

coracoid process, lip of glenoid cavity

Front 62

insertion of biceps brachii

Back 62

by tendon into radial tuberosity

Front 63

action of biceps brachii

Back 63

flexes elbow joint and supinates forearm

Front 64

origin of triceps brachii

Back 64

tubercle of scapula, posterior shaft of humerus

Front 65

insertion of triceps brachii

Back 65

common tendon into olecranon of ulna

Front 66

action of triceps brachii

Back 66

forearm extension

Front 67

origin of brachialis

Back 67

front of distal humerus, insertion of deltoid muscle

Front 68

insertion of brachialis

Back 68

coronoid process of ulna and capsule of elbow joint

Front 69

action of brachialis

Back 69

major forearm flexor