Histology

Question 1

What period is the 1st week of conception

Answer 1

preimplantation

Question 2

What period is week 2-8

Answer 2

embryonic

Question 3

What period is week 9- birth

Answer 3

fetal

Question 4

What is the term for when a zygote is formed through the union of ovum and sperm?

Answer 4

fertilization

Question 5

what will become the embryo?

Answer 5

embryoblast layer

Question 6

What is the nutritive layer for the embryo?

Answer 6

trophoblast layer

Question 7

Where does the bilaminar disk appear?

Answer 7

Within the blastocyst

Question 8

What does the bilaminar disk consist of?

Answer 8

The epiblast and hypoblast

Question 9

What does the trilaminar disk consist of?

Answer 9

ectoderm, mesoderm, and endoderm

Question 10

what does the ectoderm form?

Answer 10

enamel organ (enamel)

Question 11

what does the mesoderm form?

Answer 11

dental papilla (differentiates into pulp and dentin)
dental sac (cementum)

Question 12

what does the endoderm form?

Answer 12

epithelial linings for respiratory and digestive tracts

Question 13

which period do most abnormalities form?

Answer 13

embryonic period

Question 14

what weeks do the face and oral cavity develop

Answer 14

3-12

Question 15

the maxilla and mandible are formed from what brachial arch?

Answer 15

1st

Question 16

what is the upper face derived from?

Answer 16

frontonasal process

Question 17

what is included in the upper face

Answer 17

forehead, bridge of nose, primary palate, nasal septum, nasal pits, etc

Question 18

What is the middle face derived from?

Answer 18

maxillary process

Question 19

what does the middle face include?

Answer 19

nose, center portion of upper lip, zygomatic bones, temporal bones, cheeks, and philtrum

Question 20

lower face is derived from what?

Answer 20

mandibular process

Question 21

what do nasal placodes grow into

Answer 21

nasal pits

Question 22

what is the stomodeum?

Answer 22

the mouth

Question 23

what weeks do the tongue form

Answer 23

4-8

Question 25

lingual swellings and the tuberculum impar form what part of the tongue

Answer 25

anterior 2/3

Question 26

copula forms what part of the tongue

Answer 26

base/back

Question 27

what is the area called at the back of the tongue where the body and base of the tongue fuse together?

Answer 27

sulcus terminalis

Question 28

what weeks does the hard palate form?

Answer 28

5-12

Question 29

primary palate composes what part?

Answer 29

anterior 1/3 of hard palate

Question 30

the secondary palate is formed by what

Answer 30

two palatal shelves

Question 30

what does the secondary palate compose

Answer 30

posterior 2/3 hard palate

Question 31

what are the stages of tooth development?

Answer 31

initiation, bud, cap, bell, apposition, and maturation (I drank Bud light and ate CAmPBELL soup at the APPle store party at Midnight)

Question 32

initiation stage. what happens

Answer 32

dental lamina forms

Question 33

bud stage

Answer 33

tooth germ forms

Question 34

cap stage

Answer 34

enamel organ, dental papilla, and dental sac form

Question 35

bell stage

Answer 35

LOTSss happening. cytodifferentiation, dentin and enamel start to form

Question 36

apposition stage

Answer 36

enamel, dentin, and cementum are secreted (dentinogenisis and ameleogensis)

Question 37

maturation stage

Answer 37

dental tissues develop into their mature tissues and undergo calcification

Question 38

cleft lip. what fails to fuse

Answer 38

medial nasal process with maxillary process

Question 39

cleft palate what fails

Answer 39

palatal shelves do fue together or with primary palate

Question 40

enamel is a product from what

Answer 40

ectoderm

Question 41

layers of enamel

Answer 41

outer enamel, inner enamel, stratum intermedium, and stellate reticulum

Question 42

bulk of the enamel organ and has star shaped cells is what layer of enamel

Answer 42

stellate reticulum

Question 43

what does the inner enamel develop

Answer 43

ameleoblasts

Question 44

basic unit of enamel is what

Answer 44

enamel rod

Question 45

lines in enamel include

Answer 45

hunter bands, lines of retzius, neonatal line, perkaymata, spindles, tufts, and lamellae

Question 46

neonatal line marks what

Answer 46

trauma

Question 47

horizontal lines visible on tooth surface

Answer 47

perikymata

Question 48

what forms dentin

Answer 48

dental papilla

Question 49

dentin forms the ___ of the tooth

Answer 49

bulk

Question 50

lines in dentin

Answer 50

von ebner, owen, tomes granular layer

Question 50

1st layer of dentin

Answer 50

mantle

Question 51

calcified dentin associated with chronic injury

Answer 51

sclerotic

Question 51

dentin formed in response to trauma

Answer 51

tertiary

Question 52

dentin formed around odontoblastic process

Answer 52

peritubular

Question 53

dentin around pulpal wall

Answer 53

circumpolar

Question 54

the root derives from what

Answer 54

enamel organ

Question 55

what determines the shape of roots

Answer 55

HERS

Question 56

the center of ____ becomes the pulp

Answer 56

dental papilla

Question 57

most common cells in the pulp

Answer 57

fibroblasts

Question 58

what forms cementum

Answer 58

dental sac

Question 59

line formed with remodeling teeth through ortho

Answer 59

reversal line

Question 60

pdl is formed by

Answer 60

dental sac

Question 61

bone is formed by

Answer 61

dental sac

Question 62

pdl fibers embedded in bone and cementum

Answer 62

sharpeys fibers

Question 63

compact dense bone

Answer 63

cortical

Question 64

porous spongey bone

Answer 64

cancellous

Question 65

U shaped socket

Answer 65

alveolus

Question 66

inward projections of CT

Answer 66

rete pegs

Question 67

non keratinized mucosa

Answer 67

lining

Question 68

keratinized mucosa

Answer 68

masticatory

Question 69

most numerous papilla

Answer 69

filiform