Cray Growth Devo

Front 1

How long after conception does pharyngeal arch formation occur?

Back 1

4 weeks

Front 2

Which weeks does primary palate develop? secondary palate?

Back 2

5-8 weeks; 8-10 weeks

Front 3

range of growth age

Back 3

8 weeks to 16+ years

Front 4

when does synostosis of mand. symphyseal suture occur?

Back 4

1 yo

Front 5

when does anterior cranial base that houses cerebral part of frontal bone stop growing

Back 5

1 yo

Front 6

by what age is the cribriform plate stable

Back 6

5 yo

Front 7

90% of neuro/chondrocranial growht is completed by which age

Back 7

7 yo

Front 8

90% of viscerocranial growth is completed by which age?

Back 8

10 yo

Front 9

when does lymphoid type growth peak

Back 9

11 yo

Front 10

anterior elongation w/ frontal lobes reaches 95% of total length by which age

Back 10

6 yo

Front 11

TF Sella tursica is stable by 6yo

Back 11

false - anteiror wall is stable by 6yo, but the posterior wall stops growing all the way at 18yo

Front 12

when does the sphenoccipital synchondrosis fuse? (SOS*)

Back 12

20 yo

Front 13

increase in ML width of the cranium w/ the frontoethmoidal and occipitomastoid sutures stops at which age

Back 13

30 yo

Front 14

4 types of growth in Scammon's Growth Curves

Back 14

lymphoid, neural, general, genital

Front 15

3 events of embryogenesis

Back 15

1. Germ layers; 2. Neural crest formation/mig/diff; 3. Craniofacial development

Front 16

mutations in which genes (4) can cause cleft lip/palate

Back 16

TGFa, RARa, NADH-DH, Cyt P450

Front 17

what's teh most common birth defect

Back 17

orofacial cleft (1 in 700 births)

Front 18

Name the 4 parts of the Coronal Ring articulations that modulate A-P craniofacial growth

Back 18

1. Coronal suture; 2,3. Lateral, Orbital frontosphenoidal suture; 4. Presphenoethmoidal synchondrosis

Front 19

3 craniofacials regions which increase in dimension

Back 19

neurocranium, orognathofacial complex, masticatory apparatus

Front 20

if cranial width to length index is greater than .80, what is the craniofacial phenotype?

Back 20

fat face, so brachycephalic

Front 21

if cranial width to length index is less than .75, what is the craniofacial phenotype?

Back 21

long face = dolichocephalic

Front 22

TF Cortical bone and cancellous bone both are considered lamellar bone

Back 22

TRUE

Front 23

3 types of woven bone

Back 23

immature, healing, pathological

Front 24

how much of body Ca2+ is in bone? How much of body phosphate is in bone?

Back 24

99%; 85%

Front 25

% of the matrix of bone that is inorganic

Back 25

60%

Front 26

what is wolff's law

Back 26

bones remodel to equilibrate stress 0 piezoelectric since diff pattern of electircal signals are sent out in response to bone bending

Front 27

what type of collagen makes up skeletal cartilage?

Back 27

Type II collagen

Front 28

gene that regulates Type II collagen in skeletal cartilage

Back 28

SOX9

Front 29

TF Most of the skeleton is formed by endochondral ossification

Back 29

TRUE

Front 30

zones of the epiphyseal growth plate

Back 30

Rowdy Prostitutes Have Crazy Orgasms - Resting, Prolif, Hypertrophy, Calcification, Ossification

Front 31

where is cartilage mineralized at in the epiphyseal growth plate?

Back 31

at the border bw cartilage and diaphysis

Front 32

what are Enlow's 4 principles of growth/remodeling?

Back 32

1. Enlargement; 2. Displacement/translation; 3. Remodeling by cortical drift; 4. 'V' Principle remodeling

Front 33

term: an increase in size through resorptive and depository surfaces

Back 33

enlargement

Front 34

enlow: diff b/w primary and secondary displacement/translation

Back 34

Primary is whole regional movement by soft tissue growth; Secondary is whole regional movement of whole bones

Front 35

term: relocation of bones through synchronous cortical remodeling

Back 35

cortical drift - enlow principle #3

Front 36

what does enlow's remodeling by the V principle mean

Back 36

enlargement of bones through cortical remodeling in a syncrhonous V wave

Front 37

three cartilages of the chondrocranium

Back 37

prechordal, chordal, parachordal

Front 38

of the three chondrocranial cartilages, which is derived from the neural crest?

Back 38

prechordal [pre = before brain = neural crest comes before brain]

Front 39

of the three chondrocranial cartilages, which arises from the paraxial mesoderm?

Back 39

chordal [pair o cords]

Front 40

what fuse together to form the sphenoid and ethmoid bones

Back 40

hypophyseal cartilage, trabecuale cranii

Front 41

more ACUTE angulation of anterior cranial base has what effect on max and mand teeth? brachycephalic or dolicocephalic?

Back 41

both max and mandy posterior and more anteriorly placed - brachycephalic

Front 42

more OBTUSE angulation of anterior cranial base has what effect on max and mand teeth? brachycephalic or dolicocephalic?

Back 42

mandy back teeth are posterior, maxillary teeth are still anterior - dolicocephalic [longer difference]

Front 43

what is the donward and forward postnatal nasomaxillary complex growth due to?

Back 43

bone apposition at sutures and remodeling

Front 44

what displaces mandible away from the glenoid fossa

Back 44

growth of soft tissue, condyle/ramus fill in the space posterosuperiorly

Front 45

for closing of the symphyseal suture, does resorption occur on the buccal or lingual surface? what about apposition?

Back 45

buccal resorption, lingual deposition [tongue feeds bone growth]

Front 46

3 mech of craniofacial growth hypotheses

Back 46

1. Intrinsic growth centers; 2. Extrinsic funcitoning matrices; 3. Synthetic Theory

Front 47

What is the Synthetic Theory of cf growth

Back 47

1. Chondrocranial/septum growth controlled by intrinsic factors; 2. Neuro/viscerocranial growth controlled by extrinsic (epigenetic) factors

Front 48

5 functional matrices of craniofacial growth

Back 48

1. Neurocapsular; 2. Orbitocapsular; 3. Nasocapular; 4. Orocapsular; 5. Periosteal capsular [Brain, Eyes, Nose, Mouth, Boner]

Front 49

adipose tissue is found in which funcitonal matrix

Back 49

orbitocapsular - fatty eyes

Front 50

4 theories of MAXILLARY growth

Back 50

Functional matrix, Cartilage growth, Sutural theory, Septopremaxillary ligament

Front 51

The functional matrix theory of maxillary growth posits that which 2 cavities enlarge to form the orocapsular matrix?

Back 51

nasal and oral cavities

Front 52

3 theories of mandy growth

Back 52

periosteal contribution, cartilaginous, functional matrix

Front 53

functional matrix mandy growth: teeth =

Back 53

alveolar

Front 54

functional matrix mandy growth: temporalis =

Back 54

coronoid

Front 55

functional matrix mandy growth: masseter/medial pterygoid=

Back 55

ramus

Front 56

functional matrix mandy growth: lateral pterygoid=

Back 56

condyle