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Flashcards in General Embryology Deck (29):
1

What makes up the first 8 weeks of gestation? (2)

Preimplantation and embryonic period

2

Each craniofacial structure has a....?

Primordium

3

After fertilization of the zygote mitosis leads to what?

Blastocyst

4

What structure implants into the uterus?

blastocyst

5

What is critical for craniofacial development?

BMP (Bone Morphogenic Protein)

6

HOX genes are the blue print for?

Develop limbs and spine

7

Msx Genes genes are the blue print for?

differentiation and proliferation

8

Shh (sonic hedgehog) genes are the blue print for?

induction of facial primordium

9

Dlx genes genes are the blue print for?

lateral border of the neural plate

10

What are Ca dependent adhesion molecules?

Cadherins

11

Neurectoderm progenitors express

N-CAM

12

Skin Ectoderm progen

L-CAM

13

After the zygote cleaves a few times it is called

morula

14

How long does a blastocyst endure for?

until 3 distinct germ layers have formed.

15

What things form during the embryonic period? (3)

Pharyngeal arches
Somite development
Face development

16

What occures during patterning in embryonic period?

spatial and temporal events

17

Gastrulation is what?

Formation of 3 germ layers

18

Dorsal cells are also known as?

epiblast layer

19

Ventral cells are also known as?

Hypoblast layer

20

Hypoblast and epiblast layers form from?

Germ Disk

21

What cells form the true embryonic endoderm and mesoderm?

mesoblast cells

22

what is the primitive mouth called in embryological development

stomodeum

23

What part of the mesoderm forms cartilage, segmented muscles?

Paraxial

24

What part of the mesoderm forms Kidneys, gonads?

Inetermediate

25

What part of the mesoderm forms Heart, GUt?

Lateral Plate

26

The neural tube expands to form what there parts?

Forebrain
Midbrain
Hindbrain

27

What is it called when the neural crest cells fail to migrate to the facial region?

Treacher Collins Syndrome

28

What causes the mesoderm to break apart?

attachment proteins from E to N

29

What 3 tings happen post gastrulation?

1.) Differentiation of nervous system
2.) Formation/migration of the neural crest
3.) Embryo folding