Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

In Service > Embryology And Anatomy > Flashcards

Embryology And Anatomy Flashcards

1
Q

What root on the maxillary first molar has the least amount of root available for periodontal attachment?

A

Distobuccal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is formed when the inner and outer enamel epithelium form at the base of the cervical loop?

A

Hertwig’s epithelial root sheath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The dental pulp is derived from the?

A

Dental papilla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What nerve does an infraorbital nerve block anesthetize?

A

Middle superior alveolar nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Arteries that supply the maxillary sinus

A 
Deep temporal
Sphenopalatine
Posterior sup alveolar
ASA
Infraorbital
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The mucosa covering the nasal cavity is what type of epithelium?

A

Pseudostratified columnar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the three embryonic layers in head and neck embryology?

A

Ectoderm
Mesoderm
Endoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Pharyngeal Arch Development

A 
Brachial Arch (GR. Branchia = gill)
Arch consists of three trilaminar embryo layers: ectoderm (outside), mesoderm (core of mesenchyme), endoderm (inside)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Neural crest

A
  • Mesenchyme invaded by Neural crest, generating CT components
  • Cartilage, bone ligaments
  • arises from midbrain and hindbrain regions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Arch features

A
  • each arch contains an artery, cartilage, and nerve
  • humans have 5 arches (1,2,3,4,6) no 5 (regresses or does not form)
  • forms rosto-caudal sequence, arch 1 to 6 (from week 4 onwards)
  • arch 1,2: face, appear after closure of cranial neuropore
  • arch 3,4: neck components (4&6 fuse)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The primary palate is formed by 2 parts

A
  1. Maxillary components of the first pharyngeal arch (lateral)
  2. Frontalnasal prominence (midline)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Intermaxillary segment gives rise to the following structures?

A 
Nasal septum
Primary palate 
Floor of the nasal cavity
Philtrum
Middle portion of maxilla
Gingiva
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the stages of tooth development?

A 
Initiation
Bud 
Cap
Bell 
Maturation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What cells form the tooth germ?

A

These cells are derived from the ectoderm of the first pharyngeal arch and the ectomesenchyme of the neural crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What three parts is the tooth germ organized into?

A

Enamel organ
The dental papilla
Dental sac or follicle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What constitutes the enamel organ?

A

Outer enamel epi
IEE
Stellate reticulum
Stratum Intermedium

17
Q

What does the enamel give rise to?

A

Ameloblasts

18
Q

What does the ameloblasts do after enamel maturation?

A

Becomes apart of the reduced enamel epi

19
Q

Dental papilla gives the…?

A

Pulp (from mesenchymal cells)

Odontoblasts

20
Q

Dental sac or follicle gives rise to?

A

Cementoblasts
Osteoblasts
Fibroblasts

21
Q

What growth factor is present in the condensing ectomesenchymal cells in the dental papilla in early cap stage?

A

NGF-R

22
Q

What regulation protein is present in all tooth development stages (bud, cap, bell, crown)?

A

Sonic hedgehog

23
Q

What hormone is required for tooth eruption?

A

PTH

24
Q

What happens during the initiation stage of tooth development?

A

6-7 week
Ectoderm lining stromodeum gives rise to oral epi and then dental laminate, adjacent to deeper mesenchyme and neural crest cells and separated by a basement membrane.

25
Q

Bud stage?

A

8th week proliferation

Growth of dental lamina into a bud that penetrates growing mesenchyme

26
Q

Cap stage?

A
  • 9-10th week
  • Dental papilla forms
  • Becomes a cap that covers the dental papilla with the enamel organ covering the dental papilla (dentin and pulp)
  • dental follicle (ectomesenchymal cells) surrounds the enamel organ and limits the dental papilla (periodontium)
27
Q

Early bell stage

A

Histodifferentiation and morphodifferentiation
Stellate reticulum are the majority of cells
Enamel organ separate into 4 distinct layers (oee, iee, stratum intermedium, cervical loop).
Crown of tooth takes shape

28
Q

Advanced bell stage

A

Hard tissues, including enamel and dentin develop
Aka maturation stage
Mineralization begins at root tip
IEE (cuboidal to columnar) become preameloblasts
The adj layer of IEE become odontoblasts

In Service (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions