Pregnancy and Childbirth 1
The moment of fertilization
conception
True/False: the placenta prevents dangerous substances from passing from the mother to the embryo?
False
high-frequency sound waves used to create an image of the fetus
Ultrasound
How big is the head of the embryo in relation to its body at around 8 weeks of development?
makes up approximately half the size of the developing baby
True/False: the fetus begins to move and kick during the third to sixth month of development.
True
united egg and sperm
zygote
structure containing blood vessels that carry nutrients and oxygen from the mother to the embryo
Umbilical cord
characterized by high blood sugar levels when pregnant
gestational diabetes
What is prenatal care?
Care during pregnancy
What is an obstetrician?
a doctor who specializes in pregnancy and childbirth
From the two cell stage until about nine weeks after fertilization, the growing structure is called
embryo
From the third month until birth, the growing structure is a F _ _ _ _
fetus
test in which a doctor removes amniotic fluid
amniocentesis
True/False: the chances of having a healthy baby greatly increase if the mother visits her doctor for regular checkups throughout pregnancy?
True
one of three periods of time that divide a pregnancy
What is a trimester?
process of attachment
implantation
test in which a doctor removes a piece of the placenta
Chorionic villus sampling
What are the four behaviors essential for a healthy pregnancy?
exercise, proper nutrition, avoiding alcohol and other drugs, avoiding environmental hazards
What is folic acid?
Vitamin that is vital for development of the neural tube (which later develops into the spinal cord and brain)
What are environmental hazards?
x-rays, lead, mercury, cat litter
when the blastocyst implants in the fallopian tube
ectopic pregnancy
Structures that protect and nourish the growing embryo
amniotic sac, placenta, umbilical cord
How many sperm can fertilize an egg?
One
How long the fertilized egg stays in the fallopian tube?
A few days
What is preeclampsia?
High blood sugar levels, swelling of the wrists and ankles and high levels of protein in the urine