REPRO LABQUIZ 2

1. Embryogenesis begins with which event?

C. Fertilization

2. Fertilization results in the formation of a:

D. Zygote

3. During cleavage, which of the following occurs?

B. Increase in cell number without growth

4. Early embryonic cells that can develop into an entire organism are described as:

C. Totipotent

5. Which structure directly forms the embryo proper?

C. Inner cell mass

6. Which embryonic structure contributes primarily to placental development?

C. Trophoblast

7. The three embryonic germ layers are formed during:

C. Gastrulation

8. Which germ layer gives rise to the reproductive organs and gonads?

B. Mesoderm

9. The lining of the digestive and respiratory tracts develops from the:

C. Endoderm

10. The pituitary gland is unique because it develops from:

D. Ectoderm and neuroectoderm

11. Rathke’s pouch gives rise to the:

C. Anterior pituitary

12. The posterior pituitary primarily:

C. Stores and releases oxytocin

13. Early embryos initially possess which reproductive ducts?

C. Both mesonephric and paramesonephric ducts

14. In female (XX) development, the Müllerian ducts form the:

C. Oviducts, uterus, and cervix

15. Which hormone causes regression of the Müllerian ducts in males?

C. Anti-Müllerian hormone (AMH)

16. Which cells produce testosterone during male development?

B. Leydig cells

17. Testosterone stimulates development of which ducts?

C. Wolffian ducts

18. The SRY gene is located on the:

B. Y chromosome

19. The urogenital sinus in males forms the:

C. Prostate and urethra

20. Testicular descent occurs in how many phases?

B. Two