A teratogen
is a poisonous substance that crosses the placenta, harming the fetus.
Carlos asks Clarisa, "What is the main function of the placenta?" Clarisa should answer:
To provide nutrients to the fetus.
During the third (final) stage of labor and birth:
the placenta is expelled.
Fertilization occurs when:
a sperm penetrates the nucleus of the ovum, and the two meld into one cell.
Jolene, who is 6 months pregnant, is at high risk of immediately going into labor. Which developmental sign will best predict her child's survival?
the maturity of the baby's lungs Correct
Link each statement to the correct principle of prenatal development: "The arms form before the hands."; "The head forms before the feet.
proximodistal; cephalocaudal Correct
Pick the correct order of events during labor.
C. dilation and effacement; birth; expulsion of placenta Correct
Which event does NOT take place during the germinal stage?
The baby's body structures start to form. Correct
Which prenatal test is used to sample the fluid that surrounds the fetus?
amniocentesis
You want to describe the rates of cesarean sections in the United States over the past 30 years. What phrase should you use?
a dramatic increase