Sophia - Human Biology - Unit 5 Challenge 3.

Sophia - Human Biology - Unit 5 Challenge
3.
1 — Fertilization and Early Development
Understand the process of fertilization and the earliest human developments.

What body part develops from the ectoderm?
 a.) Bladder
 b.) Muscle
 c.) Pituitary gland
 d.) Heart

2 — Implantation
Determine the process of implantation.

Which of the following statements about ectopic pregnancy is true?
 a.) Menstruation occurs and the fertilized egg is expelled from the uterus.
 b.) The fertilized egg fuses with the ovary from which it was released.
 c.) The fertilized egg attaches to the endometrium in the uterus.
 d.) The fertilized egg implants somewhere other than the endometrium.

3 — Placenta
Identify characteristics of the placenta and other structures associated with the baby's
nourishment.

Which of the following is a sac-like structure that gives rise to umbilical blood
vessels?
 a.) Placenta
 b.) Allantois
 c.) Yolk sac
 d.) Amnion

4 — Embryonic and Fetal Development
Determine the stages of development of an embryo during pregnancy.

If a woman is just beginning to feel the movements of her developing fetus, how
many months has she most likely been pregnant?
 a.) Three months
 b.) Two months
 c.) Four months