quiz #2 Flashcards
prenatal development takes an average of 38 weeks, which are divided into how many stages?
3
immediately after conception, a fertilized egg is referred to as a…
zygote
the process of a zygote burrowing into the uterine wall is referred to as…
implantation
your sister is pregnant and wonder how her baby takes nutrients and gets rid of waste products. you tell her that it happens through a structure called a…
placenta
once implantation is compete, the developing organism is called an…
embryo
the ____ is a fluid-filled sac that cushions the embryo and maintains a constant temperature.
amniotic sac
the umbilical cord has…
blood vessels that connect the embryo to the placenta
the longest phase of prenatal development is the period of…
the fetus
the age of viability occurs around the…
seventh month of prenatal development
any agent that causes abnormal development is referred to as a…
teratogen
adira doesnt know it yet, but she is pregnant. she conceived one week ago and has not yet missed a menstrual period. adiras developing child is in the period of the…
zygote
the period of the embryo goes from ___ weeks after conception.
3-8 weeks
during the period of _____, the developing individual becomes much larger and its bodily systems begin to work.
the fetus
differentiation of cells begins…
during the period of the zygote
most of the body structures and internal organs develop during the period of the…
fetus
