Muscles

Front 1

Origin: Attaches to the frontal bone.

Function: causes wrinkles in forehead

Back 1

Occipitofrontalis

Front 2

Origin: Eye

Function: Surrounds the orbit contracting causes the eye to close

Back 2

Orbicularis oculi

Front 3

Origin: Oral cavity

Function: Close or purse lips.

Back 3

Orbicularis oris

Front 4

Origin: Zygomatic process to edges of mouth

Function: Pulls up corners of mouth for smiling

Back 4

Zygomaticus major

Front 5

Origin: attaches mandible to mouth

Function: pulls corner of mouth down

Back 5

Depressor anguli oris

Front 6

Origin: upper lip

Function: elevates upper lip

Back 6

levator labii superioris

Front 7

Origin: lower lip

Function: depresses the lower lip

Back 7

depressor labii inferioris

Front 8

Origin: cheek

Function: holds food in place while chewing

Back 8

buccinator

Front 9

Origin: superficial muscle of the neck

Function: makes neck tighter or tenses. *men shaving*

Back 9

platysma

Front 10

Origin: over temporal bone *lateral

Function: elevates mandible

Back 10

temporalis

Front 11

Origin: lateral side of mandible

Function: elevates mandible

Back 11

masseter

Front 12

Origin: deep to masseter muscle

Function: attaches to mandible *elevates mandible

Back 12

medial pterygoid

Front 13

Origin: deep to masseter muscle

Function: depresses the mandible
*frowning

Back 13

lateral pterygoid

Front 14

origin: hyoid bone to tongue

function: depresses (pulls down) the tongue

Back 14

hyoglossus

Front 15

origin: mandible to tongue

function: pulls the tongue down

Back 15

genioglossus

Front 16

origin: styloid process to tongue

function: retract & elevates
*pulls back in

Back 16

styoglossus

Front 17

origin: anterior neck *superior to hyoid

function: elevates hyoid bone
*swallowing

Back 17

suprahyoid muscles

Front 18

origin: anterior neck
*inferior to hyoid

function: depresses hyoid

Back 18

infrahyoid muscles

Front 19

origin: anterolateral neck

function: bilaterally flexes neck; unilaterally, rotates neck to opposite side

Back 19

sternocleidomastoid

Front 20

origin: deep to SCM

function: bilaterally flexes neck; unilaterally, rotates neck to opposite side

Back 20

scalenus medius

Front 21

origin: extends from sacrum to skull

function: extends spine

Back 21

illiocostalis

ERECTOR SPINAE GROUP

Front 22

origin: along vertebral column, deep

function: extends spine

Back 22

longissimus

ERECTOR SPINAE GROUP

Front 23

origin: to superficial muscles

function: extends spine

Back 23

spinalis

ERECTOR SPINAE GROUP

Front 24

origin: posterior abdominal wall, under diaphragm to illiac crest

function: bilaterally, flexes lumbar spine
Unilaterally, laterally flexes to same side

Back 24

quadratus lumborum

Front 25

origin: abdomen, superficial

function: bilaterally, flexes & rotates spine

Back 25

external oblique

Front 26

origin: abdomen; deep to e.o.

function: bilaterally, flexes & rotates spine

Back 26

internal oblique

Front 27

origin: abdomen, innermost

function: supports abdominal organs

Back 27

transversus abdominis

Front 28

origin: abdomen, medial, superficial

function: flexes spine

Back 28

rectus abdominis

Front 29

origin: between ribs

function: bilaterally, flexes & rotates spine

Back 29

external oblique

Front 30

origin: abdomen, deep to e.o.

function: bilaterally, flexes & rotates spine

Back 30

internal oblique

Front 31

origin: abdomen, innermost

function: supports abdominal organs

Back 31

transversus abdominis

Front 32

origin: abdomen, medial, superficial

function: flexes spine

Back 32

rectus abdominis

Front 33

origin: b/w ribs

function: aid in repsiration

Back 33

external intercostals

Front 34

origin: b/w ribs

function: aid in respiration

Back 34

internal intercostals

Front 35

origin: b/w thoracic & abdominal cavities

function: respiration

Back 35

diaphragm