Chapter 3 Flashcards
Immediately after conception, a fertilized egg is referred to as a(n) ________
zygote
Near the center of a zygote is a small cluster of cells called the ___ _____ which will eventually develop into the baby
germ disk
Most of the body structures and internal organs develop during the period of the______
embryo
The ____ _____ is a fluid-filled sac that cushions the embryo and maintains a constant ________.
amniotic sac
temperature
Stress during pregnancy is associated with ___ ____, ____ ____
smaller size, medical problems, etc.
Teenage mothers are more likely to have children . . . .
who do worse in school, LBW
The age of viability occurs around the ___ to ___ ____ of prenatal development
22 to 28 weeks
Research in which mothers read aloud during the last months of their pregnancy suggests that newborns ______________________________________
remember their mother’s voice from the time they were in the womb.
remember their mother’s voice from the time they were in the womb.______ and to be _______
premature
underweight
Several studies examining the impact of pregnant mothers exposed to electromagnetic fields that are generated by video display terminals have found . .____________
increased behavioral problems in children
Maternal exposure to ______ during pregnancy is associated with retarded growth, mental retardation, and cerebral palsy.
mercury
Exposure to teratogens during the period of the zygote usually results in _________ miscarriage,
spontaneous
During the period of the ______, exposure to teratogens is most often associated with _____ defects in bodily structure or ______ functioning of body systems.
fetus
minor
improper
______ is most likely to be used to detect genetic disorders.
CVS (chronic villus sampling)
Stage one of labor for the first child usually lasts between ____ and ____ hours and between ____ and _____ for subsequent births
12 to 24 hours
3 to 8 hours
