Question

1. which of the following is a thin, fluid filled membrane that surrounds and protects the developing embryo?umbilical cordplacentaamniotic sacprenatal32. where in the female body does implantation occur in a healthy pregnancy?fallopian tubeuterusplacentaumbilical cord33. which of the following are substances that have harmful effects on a developing fetus?tobaccoalcoholillegal drugsall of the above

Explanation:

• Question 31: The amniotic sac is a thin, fluid - filled membrane that surrounds and protects the developing embryo. The umbilical cord connects the embryo to the placenta. The placenta is an organ for nutrient and gas exchange. "Prenatal" is a term related to the period before birth, not a membrane.
• Question 32: In a healthy pregnancy, implantation occurs in the uterus. The fallopian tube is where fertilization usually takes place. The placenta develops after implantation. The umbilical cord connects the fetus to the placenta.
• Question 33: Tobacco, alcohol, and illegal drugs are all known to have harmful effects on a developing fetus. So, all of these substances are teratogens (substances that can cause birth defects).

Answer:

1. amniotic sac
2. uterus
3. all of the above