3rd Quarter Restorative Art Test 2 Flashcards
external facial bones
- nasal bones (2)
- zygomatic bones (2)
- maxilla (2)
- mandible
Forms a dome over the superior portion of the nasal cavity.Located directly inferior to the glabella
nasal bones
see glossary for definition
angle of inclination
orifice bonded by the margins of the nasal bones and the maxilla
nasal cavity
diamond shaped bone of the cheek
zygomatic bone
might see zygomatic bone or zygomatic arch as being measured to get the….
widest part of the face
just underneath the zygomatic arch you will find the…
zygomatic depression
lies lateral to the portion of the cheek inferior to the zygomatic arch
zygomatic depression
made up by the frontal bone and the zygomatic bone
zygomatico frontal process
two fused bones that form skeletal base of most of the superior face, roof of the mouth, sides of the nasal cavity, and the floor of the orbit (eye socket)
maxilla
maxilla is also called the…
upper jaw bone
sharp boney projection located medially along the inferior margin of the nasal cavity
nasal spine
a slip of skin partition that covers the nasal spine and separates the medial portion of the nostrils.most inferior part of the nose
columna nasi
processes of the maxillan
Alveolar process
Frontal process of the maxilla
Palatine Process
Dental Prognathism (buck teeth)
bony ridge that contains the tooth sockets
alveolar process
ascending part of the upper jaw
frontal process of the maxilla
horse shoe shaped single bone of the mouthlower jaw
mandible
2 main parts of the mandible
Body Ramus
horizontal portion of the mandible
body
corresponding vertical portion of the mandible
ramus
parts of the body of the mandible
mental eminence
incisive fossa
alveolar processes
parts of the ramus of the mandible
condyle
coronoid process
mandibular notch
Prominent eminence of the mandibleTriangular projection on the inferior portion of the anterior mandible
mental eminence
area between the mental eminence and the inferior incisor teeth
incisive fossa
the four teeth located anteriorly from the midline on each jaw; used for cutting
incisive teeth
rounded eminence at the articulating end of the bone
condyle
non articulating end of the bonethis is where the temporal muscle attaches
coronoid process
the depression located between the condyle and the coronoid process
mandibular notch
marks the widest part of the lower 1/3 of the face
angle of the mandible
a bony angle formed by the junction of the posterior edge of the ramus of the mandible and the inferior surface of the body of the mandible
angle of the mandible
widest part of the lower face
bi-mandibular
widest part of the head (cranium)
bi-parietal
widest part of the face
bi-zygomatic
Check textbook
page 23
other bones that are not surface bones….they are of less interest to (Alteri)
(cranium)
ethmoid bones
phenoid bone
(facial)
vomer bone
palantine bones
lacrimal bones
see pages 20 & 23 for
other bones that are not surface bones
muscle provides…
muscle bulk
contour effect
topographical surface form
continual muscle contraction leaves…
markings (wrinkles) on the face
wrinkles run ___________ to muscle fiber
transverse
wrinkles are more pronounced on ______
males
loss of muscle tone will cause__________
sagging of tissues
what bones make up margins of nasal cavity
nasal bone
maxilla
area between mental eminence and area between incisor teeth
incisive fossa
What muscle attaches to the coronoid process?
temporal muscle
this can play a part in moving muscle tissue inferiorly verses posteriorly
gravitational pull
environment
heredity
can all play a part in…
loss of muscle tone
the point of muscle attachment which moves the least
The beginning of muscle contraction
origin
the point of muscle attachment which moves the most (greatest) amount.
insertion
know the following for each facial muscle…
location
function
effect on surface form
muscles of the cranium
Occipitofrontalis Muscle (1)
masseter muscle
temporalis muscle
Muscle that draws the scalp posteriorly and inferiorly and raises the eyebrows. Thin sheeth located between the occipital and frontal bones.
Occipitofrontalis Muscle
Occipitofrontalis Muscle is also known as…
epicranius
parts of Occipitofrontalis Muscle
occipitalis
frontalis
the frontalis is also called…
the frontal belly
the occipitalis is also called…
the occipital belly
The effects of the Occipitofrontalis Muscle on Surface Form
- When contracted it raises eyebrows
2. Continual contraction forms Transverse Frontal Sulci
wrinkles (lines) that run across the front of the forehead
transverse frontal sulci
Transverse frontal sulci is what type of facial marking?
Acquired
Name the types of Muscles of Mastication
- Temporalis (2)
2. Masseter (2)
broad fan shaped muscle located along the temporal bone.
fairly thin
temporalis muscle
the purpose of the temporalis muscle…
closes mandible
mastication
some side-to-side movement
what is the strongest chewing muscle (muscle of mastication)?
temporalis muscle
temporalis muscle effect on surface form…
provides SOME bulk to the temporal cavity
the temporalis muscle overlies what muscle?
squamous muscle
masseter muscle effect on surface form
provides bulk to the side of the cheek
function of masseter muscle is…
mastication
closes the mandible