Histo Ch. 3 Quiz Flashcards
membrane at caudal end of embryo that is the location of future anus
cloacal membrane
change in identical embryonic cells to become distinct structurally and functionally
differentiation
originates directly from the epiblast layer
ectoderm
second week to eight week of prenatal development
embryonic period
: layer in trilaminar embryonic disc derived from hypoblast layer; gives rise to lungs, digestive system, liver, pancreatic cells
endoderm
period involving embryo growing to fetus
9th week to 9th month
fetal period
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
action of one group of cells on another that leads to the establishment of developmental pathway in the responding tissue
induction
attainment of adult function and size due to proliferation, differentiation, and morphogenesis
maturation
have the potential to proliferate and differentiate into diverse types of connective tissue-forming cells
mesenchyme
future dermis, muscle, bone
mesoderm
development of specific tissue structure or differing form due to embryonic cell migration and inductive interactions
morphogenesis
considered by many to be the fourth embryonic layer
neural crest cells
specialized group of cells that differentiates from ectoderm; central band of cells that extends length of embryo cephalic end to caudal end;
neuroectoderm
location of the future primitive mouth of the embyo
oropharyngeal membrane
Or
Buccopharyngeal membrane
