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71 Cards in this Set

  • Front
  • Back
tripartite sphincter
orbicularis oculli eyelid muscle
originates in the frontal and maxillary bones and ligaments
orbicularis oculli
encircles orbit and inserts in tissue of eyelid
orbicularis oculli
thin muscle between orbicularis oris and inferior eye muscle
levator labii superioris
originates in zygomatic bone and infraorbital margin of maxilla
levator labii superioris
inserted in skin and muscle of upper lip and border of nostril
levator labii superioris
raises and furrows upper lip; opens lip
levator labii superioris
extends diagnolly from corner of mouth to cheekbone
zygomaticus
originates in zygomatic bone
zygomaticus
inserted in skin and muscle at corner of mouth
zygomaticus
raises lateral corners of mouth upward (smiling)
zygomaticus
slender muscle; runs inferior and lateral to zygomaticus
risorius
originates in fascia of masseter muscle
risorius
inserted in skin at angle of mouth
risorius
draws corners of lip laterally; tenses lips; zygomaticus synergist
risorius
small muscle from lower lip to mandible
depressor labii inferious
originates in the body of mandible lateral to its midline
depressor labii inferious
inserted into the skin and muscle of lower lip
depressor labii inferious
draws lower lip inferiorly
depressor labii inferious
small muscle lateral to depressor labii inferious
depressor anguli oris
originates in body of mandible below incisors
depressor anguli oris
skin and mucle at angle of mouth below insertion of zygomaticus
depressor anguli oris
zygomaticus antagonist; draws corners of mouth downward and laterally
depressor anguli oris
multilayered muscle of lips with fibers that run in many diff directions; most run circularly
orbiculus oris
originates indirectly from maxilla and mandible; fibers blended with other fibers associated with lips
orbiculus oris
inserts into muscle and skin at angles of mouth
orbiculus oris
closes mouth; purses and protrudes lips (kissing and whistling muscle)
orbiculus oris
principle muscle of cheek; runs horizontally, deep to masseter
buccinator
inserted into orbiculus oris
buccinator
originates from molar region of maxilla and mandible
buccinator
draws corners of mouth laterally; compresses cheek (as in whistling); holds food between teeth during chewing.
buccinator
bipartite muscle consisting of frontal and occipital parts, which covers dome of skull
epicranius
originates in galea aponeurotica
frontal belly
inserted in skin of eyebrows and root of nose; wrinkles on forehead
frontal belly
with aponeurosis fixed, it raises eyebrows
frontal belly
originates in occipital and temporal bones
occipital belly
inserted into galea aponeurotica
occipital belly
fixes aponeurosis and pulls scalp posteriorly
occipital belly
covers lateral aspect of mandibular ramus; can be palpated or touched on forcible closure of jaws
massater
originates in zygomatic arch and maxilla
massater
inserted in angle and ramus of mandible
massater
closes jaw and elevates mandible; chewing
massater
fan-shaped muscle lying over parts of frontal, pariental and temporal bones
temporalis
origiantes in temporal fossa
temporalis
inserted in the coroniod process of mandible
temporalis
closes jaw; elevates and retracts mandible
temporalis
unpaired muscle: thin sheetlike superficial neck muscle, not strictly a head muscle but plays a role in facial expression
platysma
originates in fascia of chest (0ver pectoral muscles) and deltoid
platysma
inserted in lower margin of mandible, skin, and muscle at corner of mouth
platysma
deppresses mandible; pulls lower lip back and down (i.e., produces downward sag of mouth)
platysma
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
sternocleidomastoid
originates in manubrium of sternum and medial portion of clavicle
sternocleidomastoid
inserted into mastiod process of temporal bone and superior nuchal line of occipital bone
sternocleidomastoid
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
sternocleidomastoid
the 2 neck muscles
sternocleidomastoid and platysma
sole, large fleshy muscle of posterior humerus; three-headed origin
tricepts brachii
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
tricepts brachii
liquid to gas
vaporization
gas to liquid
condensation
solid to gas
sublimation
gas to solid
depostion
solid
compact; definite shape and volume
liquid
some energy; no definite shape, definite volume
gas
most energy so more spaced out; no definite shape, no definite volume
Extensive Properties
depend on quantity; i.e., volume
Intensive Properties
do not depend on quantity; i.e., color
Pure Substance
matter in which all samples have identical composition and properties
Compounds
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
Elements
substances that cannot be decomposed into simpler substances via chemical reactions
base
yields
hydroxide ions (OH-) when dissolved in water
acid
a substance that yields
hydrogen ions (H+) when dissolved in water