2: Prenatal Development, Pregnancy, and Birth Flashcards
death during the first year of life
infant mortality
a hormone often measured in saliva by researchers as a biological marker of stress
cortisol
second stage of prenatal development, during which all major organs are constructed - lasts 6 weeks
embryonic stage
an illness that a child gets by inheriting two copies of the abnormal gene that causes it (both parents)
recessive disorder
an image of a fetus in the womb that helps to date the pregnancy, assess the fetus’ growth, and identify abnormalities
ultrasound
new research discipline exploring the impact of traumatic pregnancy events and stress on producing low birth weight, obesity, and long-term physical problems
fetal programming research
the period of pregnancy (266-277 days)
gestation
the moment, around day 14 of a woman’s menstrual cycle, when an ovum is expelled from the ovary
ovulation
second-trimester procedure, involves inserting a syringe in woman’s uterus to extract sample of amniotic fluid, which is tested for genetic/chromosomal conditions
amniocentesis
a common situation in affluent countries, in which parents are torn between the demands of family and a career
family-work conflict
a substance that crosses the placenta and harms the fetus
teratogen
the earliest point at which a baby can survive outside the womb (22-23 weeks)
age of viability
the material that makes up genes, which bear our hereditary characteristics
DNA (deoxyribonucleic acid)
the naturally occurring loss of a pregnancy and death of the fetus
miscarriage
the process in which a blastocyst becomes embedded in the uterine wall
implantation
the time when a body structure is most vulnerable to damage by a teratogen, typically when the organ or process is rapidly developing, coming “online”
sensitive period
a blood test to determine whether a person carries the gene for a given genetic disorder
genetic testing
a bag-shaped, fluid-filled membrane that contains and insulates the fetus
amniotic sac
any fertility treatment in which the egg is fertilized outside the womb
assisted reproductive technology (ART)
the narrow lower portion (neck) of the uterus
cervix
a professional who counsels parents-to-be about their children’s risk of developing genetic disorders, available treatments
genetic counselor
three month-long segments into which pregnancy is divided
trimesters
first 14 days of prenatal development, from fertilization to implantation
germinal stage
thread-like strands of DNA located in the nucleus of every cell (every cell has 46, except sperm and ova, which have 23)
chromosomes