Muscles Of Head

Front 1

tripartite sphincter

Back 1

orbicularis oculli eyelid muscle

Front 2

originates in the frontal and maxillary bones and ligaments

Back 2

orbicularis oculli

Front 3

encircles orbit and inserts in tissue of eyelid

Back 3

orbicularis oculli

Front 4

thin muscle between orbicularis oris and inferior eye muscle

Back 4

levator labii superioris

Front 5

originates in zygomatic bone and infraorbital margin of maxilla

Back 5

levator labii superioris

Front 6

inserted in skin and muscle of upper lip and border of nostril

Back 6

levator labii superioris

Front 7

raises and furrows upper lip; opens lip

Back 7

levator labii superioris

Front 8

extends diagnolly from corner of mouth to cheekbone

Back 8

zygomaticus

Front 9

originates in zygomatic bone

Back 9

zygomaticus

Front 10

inserted in skin and muscle at corner of mouth

Back 10

zygomaticus

Front 11

raises lateral corners of mouth upward (smiling)

Back 11

zygomaticus

Front 12

slender muscle; runs inferior and lateral to zygomaticus

Back 12

risorius

Front 13

originates in fascia of masseter muscle

Back 13

risorius

Front 14

inserted in skin at angle of mouth

Back 14

risorius

Front 15

draws corners of lip laterally; tenses lips; zygomaticus synergist

Back 15

risorius

Front 16

small muscle from lower lip to mandible

Back 16

depressor labii inferious

Front 17

originates in the body of mandible lateral to its midline

Back 17

depressor labii inferious

Front 18

inserted into the skin and muscle of lower lip

Back 18

depressor labii inferious

Front 19

draws lower lip inferiorly

Back 19

depressor labii inferious

Front 20

small muscle lateral to depressor labii inferious

Back 20

depressor anguli oris

Front 21

originates in body of mandible below incisors

Back 21

depressor anguli oris

Front 22

skin and mucle at angle of mouth below insertion of zygomaticus

Back 22

depressor anguli oris

Front 23

zygomaticus antagonist; draws corners of mouth downward and laterally

Back 23

depressor anguli oris

Front 24

multilayered muscle of lips with fibers that run in many diff directions; most run circularly

Back 24

orbiculus oris

Front 25

originates indirectly from maxilla and mandible; fibers blended with other fibers associated with lips

Back 25

orbiculus oris

Front 26

inserts into muscle and skin at angles of mouth

Back 26

orbiculus oris

Front 27

closes mouth; purses and protrudes lips (kissing and whistling muscle)

Back 27

orbiculus oris

Front 28

principle muscle of cheek; runs horizontally, deep to masseter

Back 28

buccinator

Front 29

inserted into orbiculus oris

Back 29

buccinator

Front 30

originates from molar region of maxilla and mandible

Back 30

buccinator

Front 31

draws corners of mouth laterally; compresses cheek (as in whistling); holds food between teeth during chewing.

Back 31

buccinator

Front 32

bipartite muscle consisting of frontal and occipital parts, which covers dome of skull

Back 32

epicranius

Front 33

originates in galea aponeurotica

Back 33

frontal belly

Front 34

inserted in skin of eyebrows and root of nose; wrinkles on forehead

Back 34

frontal belly

Front 35

with aponeurosis fixed, it raises eyebrows

Back 35

frontal belly

Front 36

originates in occipital and temporal bones

Back 36

occipital belly

Front 37

inserted into galea aponeurotica

Back 37

occipital belly

Front 38

fixes aponeurosis and pulls scalp posteriorly

Back 38

occipital belly

Front 39

covers lateral aspect of mandibular ramus; can be palpated or touched on forcible closure of jaws

Back 39

massater

Front 40

originates in zygomatic arch and maxilla

Back 40

massater

Front 41

inserted in angle and ramus of mandible

Back 41

massater

Front 42

closes jaw and elevates mandible; chewing

Back 42

massater

Front 43

fan-shaped muscle lying over parts of frontal, pariental and temporal bones

Back 43

temporalis

Front 44

origiantes in temporal fossa

Back 44

temporalis

Front 45

inserted in the coroniod process of mandible

Back 45

temporalis

Front 46

closes jaw; elevates and retracts mandible

Back 46

temporalis

Front 47

unpaired muscle: thin sheetlike superficial neck muscle, not strictly a head muscle but plays a role in facial expression

Back 47

platysma

Front 48

originates in fascia of chest (0ver pectoral muscles) and deltoid

Back 48

platysma

Front 49

inserted in lower margin of mandible, skin, and muscle at corner of mouth

Back 49

platysma

Front 50

deppresses mandible; pulls lower lip back and down (i.e., produces downward sag of mouth)

Back 50

platysma

Front 51

2-headed muscle located deep to platysma on surface of neck; fleshy parts on either side indicated limits of anterior and posterior triangles of neck

Back 51

sternocleidomastoid

Front 52

originates in manubrium of sternum and medial portion of clavicle

Back 52

sternocleidomastoid

Front 53

inserted into mastiod process of temporal bone and superior nuchal line of occipital bone

Back 53

sternocleidomastoid

Front 54

simultaneous contraction of both muscles of pair causes flexion of neck fpward, generally against resistance (as when lying on the back); acting independently, rotate head toward shoulder on opposite side

Back 54

sternocleidomastoid

Front 55

the 2 neck muscles

Back 55

sternocleidomastoid and platysma

Front 56

sole, large fleshy muscle of posterior humerus; three-headed origin

Back 56

tricepts brachii

Front 57

long head-inferior margin of glenoid cavity; lateral head- posterior humerous; medial head- distal radial groove on posterior humerus; medial head- distal radial groove on posterior humerus

Back 57

tricepts brachii

Front 58

liquid to gas

Back 58

vaporization

Front 59

gas to liquid

Back 59

condensation

Front 60

solid to gas

Back 60

sublimation

Front 61

gas to solid

Back 61

depostion

Front 62

solid

Back 62

compact; definite shape and volume

Front 63

liquid

Back 63

some energy; no definite shape, definite volume

Front 64

gas

Back 64

most energy so more spaced out; no definite shape, no definite volume

Front 65

Extensive Properties

Back 65

depend on quantity; i.e., volume

Front 66

Intensive Properties

Back 66

do not depend on quantity; i.e., color

Front 67

Pure Substance

Back 67

matter in which all samples have identical composition and properties

Front 68

Compounds

Back 68

substances composed of atoms of two or more elements chemically united in fixed proportions in a definite ratio by mass. can be decomposed into the constituent elements

Front 69

Elements

Back 69

substances that cannot be decomposed into simpler substances via chemical reactions

Front 70

base

Back 70

yields
hydroxide ions (OH-) when dissolved in water

Front 71

acid

Back 71

a substance that yields
hydrogen ions (H+) when dissolved in water