sperm = egg =
which is not one of the periods of prenatal development?
_________is the time frame for the embryonic period
they zygote must travel from the____________to the uterine wall
fallopian tube (fertilization site)
the blastocyst consists of which layers?
embryoblast and trophoblast
an ectopic pregnancy occurs when what?
the zygote implants anywhere other than the uterine wall
what is the correct order of the developmental procss from beginning to end?
induction, proliferation, differentiation, morphogenesis, maturation
histodifferentiation is the development of different________in a structure
which process involves embryonic cells becoming distinct structurally and functionally?
which process involves controlled cellular growth?
The bilaminar embryonic disc consists of which layers?
epiblast and hypoblast
what serves as initial nourishment for the embryonic disc?
the trilaminar embryonic disc has 3 distinct layers, please list them
the placenta develop from interactions between the endometrial tissues and___________
what structure resembles a bum?
the cloacal membrane will give rise to what?
the terminal end of the digestive tract
which of these does not come from endoderm?
respiratory system linings
digestive system linings
What is one harmful thing that can cross through the placenta?
ch. 1-3 1