Histo - Rougier

Question 1

above the notochord is related to the

Answer 1

brain

Question 2

below the notochord is related to the

Answer 2

arches aka viscerocranium

Question 3

the viscerocranium is derived from

Answer 3

NCCs (ectomesenchyme)

Question 4

intramembranous means it never had

Answer 4

cartilage

Question 5

endochondral bone means it had _______ that gave shape to ______

Answer 5

cartilage ; bone

Question 6

had cartilage, it dies, gets replaced by bone

Answer 6

primary endocondral

Question 7

cartilage that originates from intramembranous bone

Answer 7

secondary endochondral

Question 8

cartilaginous neurocranium forms the

Answer 8

base of skull

Question 9

membranous neurocranium forms the

Answer 9

roof of skull

Question 10

arch 1 - distal Meckel’s cartilage gives rise to

Answer 10

malleus

Question 11

arch 1 - dorsal Meckel’s cartilage gives rise to

Answer 11

incus

Question 12

stapes is from arch

Answer 12

2

Question 13

reichert’s cartilage in arch 2 gives rise to the

Answer 13

origin of hyoid

Question 14

membranous viscerocranium (4 things)

Answer 14

maxilla
zygomatic
squama of temporal
mandible

Question 15

origin and ossification of frontal bone

Answer 15

NCC and IM

Question 16

origin and ossification of parietal bone

Answer 16

Mesodermal and IM

Question 17

origin and ossification of occipital bone

Answer 17

mesoderm and endochondral

Question 18

origin and ossification of petrous temporal bone

Answer 18

mesoderm and endocondral

Question 19

origin and ossification of squamous temporal bone

Answer 19

NCC and endochondral

Question 20

origin and ossification of hyoid bone

Answer 20

NCC and endochondral

Question 21

the body of the mandible develops by what bone formation

Answer 21

intramembranous

Question 22

is there an equivalent of meckel’s cartilage in the maxilla

Answer 22

no

Question 23

articular cartilage develops from what cartilage

Answer 23

secondary

Question 24

intramembranous bone formation forms most of the _________ , except the __________

Answer 24

mandible ; condylar process

Question 25

the neurocranium grows ____ and ______

Answer 25

up and back

Question 26

the maxilla is displaced _______ and _______

Answer 26

anteriorly (to the right) and down

Question 27

expansion of the facial skeleton accompanies growth of the brain and soft tissues - this is called

Answer 27

bone drift

Question 28

the maxillary tuberosity grows ________ and _______ to accommodate new teeth

Answer 28

down (posteriorly) to the right (inferiorly)

Question 29

there is no _______ covering the articular surfaces in the skull

Answer 29

epithelium

Question 30

small opening of jaw

Answer 30

rotation

Question 31

large opening of jaw

Answer 31

translocation (pushing forward)

Question 32

dorsal portion of articular eminence is in-between the

Answer 32

disc and skull

Question 33

the ventral portion of the articular eminence is between the

Answer 33

disc and condyle

Question 34

TMJ is formed most by __________ which is rich in ___________

Answer 34

fibrous CT ; collagen 1

Question 35

there is no ________ present on any of the surfaces of the TMJ

Answer 35

epithelium

Question 36

what makes up parts of the TMJ (4 parts)

Answer 36

articular eminence articular fossa articular disc condylar process

Question 37

what are the 4 stages of the condylar process formation

Answer 37

proliferation hypertrophy calcification ossification

Question 38

since the end product of the condylar/articular process is ossification, eventually we will only have a thin layer of _________ in the condylar process and a thick layer of ______________

Answer 38

fibrocartilage ; dense & fibrous CT

Question 39

the alveolar process is derived from

Answer 39

NCCs

Question 40

the neural portion = the body of the jaw will

Answer 40

stay no matter what

Question 41

the formation of the alveolar process occurs as the body of the mandible forms which is seen as

Answer 41

vertical growth of bone during bell stage

Question 42

development of the alveolar process accompanies

Answer 42

deciduous and permanent tooth eruption

Question 43

3 components of the alveolar process

Answer 43

alveolar bone proper (ABP) cortical bone plate (CP) spongiosum (trabecular) bone

Question 44

the alveolar bone proper lines the ______ and has direct contact with the _______

Answer 44

alveolus ; roots

Question 45

the cortical bone plate forms ______ and ______ surfaces

Answer 45

lingual and facial

Question 46

the spongiousm bone connects

Answer 46

ABP and CP

Question 47

alveolar bone proper is identified as what in radiographs

Answer 47

lamina dura

Question 48

alveolar bone proper is composed of _______ bone and _______ bone

Answer 48

bundle and compact

Question 49

bundle bone is much richer in organic content so it does not show

Answer 49

osteon organization

Question 50

what is the deeper portion of the alveolar bone

Answer 50

compact bone

Question 51

bundle bone has an abundance of __________ fibers which are abundant in what type of collagen

Answer 51

Sharpey's fibers ; type 1

Question 52

supporting alveolar bone is composed of the

Answer 52

cortical plate and spongiosum

Question 53

which teeth have little presence of spongiosum

Answer 53

anterior

Question 54

the alveolar process adapts during growth to achieve proper

Answer 54

occlusion

Question 55

facial translocation of teeth occurs in association with

Answer 55

enlargement of the face

Question 56

tension on bone =

Answer 56

deposit bone

Question 57

pressure on bone =

Answer 57

resorb bone

Question 58

tension and pressure on bone is the effect of

Answer 58

mesial drift

Question 59

signs of mesial drift: compress side =

Answer 59

resorption

Question 60

signs of mesial drift: tension side =

Answer 60

deposition

Question 61

simultaneous deposition of bone by osteoblast and remodeling by osteoclast is called

Answer 61

coupling

Question 62

osteoblasts produce

Answer 62

Howship's lacuna

Question 63

the direction of drift follows the side with

Answer 63

deposition (appears smooth)

Question 64

what gives the curvy shape in drift images

Answer 64

Howship's Lacuna

Question 65

no teeth = no

Answer 65

alveolar bone

Question 66

alveolus that is too thin

Answer 66

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