Histo Ch. 3 Quiz Flashcards Preview

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Flashcards in Histo Ch. 3 Quiz Deck (21):
1

membrane at caudal end of embryo that is the location of future anus

cloacal membrane

2

change in identical embryonic cells to become distinct structurally and functionally

differentiation

3

originates directly from the epiblast layer

ectoderm

4

second week to eight week of prenatal development

embryonic period

5

: layer in trilaminar embryonic disc derived from hypoblast layer; gives rise to lungs, digestive system, liver, pancreatic cells

endoderm

6

period involving embryo growing to fetus
9th week to 9th month

fetal period

7

joining of embryonic tissue of two separate surfaces or elimination of a furrow between two adjacent swellings or developmental disturbances in which adjacent tooth germs unite to form large tooth

fusion

8

action of one group of cells on another that leads to the establishment of developmental pathway in the responding tissue

induction

9

attainment of adult function and size due to proliferation, differentiation, and morphogenesis

maturation

10

have the potential to proliferate and differentiate into diverse types of connective tissue-forming cells

mesenchyme

11

future dermis, muscle, bone

mesoderm

12

development of specific tissue structure or differing form due to embryonic cell migration and inductive interactions

morphogenesis

13

considered by many to be the fourth embryonic layer

neural crest cells

14

specialized group of cells that differentiates from ectoderm; central band of cells that extends length of embryo cephalic end to caudal end;

neuroectoderm

15

location of the future primitive mouth of the embyo

oropharyngeal membrane
Or
Buccopharyngeal membrane

16

prenatal organ that joins the pregnant woman and developing embryo

placenta

17

fertilization and implantation occur in this period

preimplantation period

18

: furrowed, rod-shaped thickening in the middle of the disc
3rd week

primitive streak

19

controlled cellular growth and accumulation of byproducts

proliferation

20

Paired cuboidal aggregates of cells of differentiated from mesoderm

somites

21

Mesoderm derived from

Epiblast