Quiz #2 Flashcards
Prenatal development takes an average of 38 weeks, which are divided into how many stages?
Three
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 wonders how her baby takes in nutrients and gets rid of waste products. You tell her that it happens through a structure called the
Placenta
Once implantation is complete, the developing organism is called an
Embryo
Amniotic sac
The fluid filled sac that cushions the embryo and maintains a constant temperature
The umbilical chord
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 prenatal development is referred to as
Teratogen
Emelia doesn’t know it yet, but she is pregnant. She conceived one week ago and has not yet missed a menstrual period. Emelia’s developing child is in the period of the
Zygote
The period of the embryo goes from
3 to 8 weeks after conception
The period of the fetus
The developing individual becomes much larger and its bodily systems begin to work
Differentiation of cells begin
During the period of the zygote
Most of the body structures and internal organs develop during the period of the
Embryo
