1. Where does fertilization typically occur? A. Uterus B. Is...

1. Where does fertilization typically occur? A. Uterus B. Isthmus C. Ampulla of the fallopian tube (*) D. Ovary

2. How long can an ovum remain fertile after ovulation? A. 6 hours B. 24 hours (*) C. 48 hours D. 72 hours

3. Which reaction makes the ovum impenetrable to other sperm? A. Acrosome reaction B. Cortical reaction (*) C. Zona hardening D. Sperm capacitation

4. The sperm gains the ability to penetrate the egg during: A. Mitosis B. Capacitation (*) C. Fertilization D. Oogenesis

5. Which enzyme helps sperm penetrate the corona radiata? A. Amylase B. Hyaluronidase (*) C. Lipase D. Lactase

6. What is the result of the union of sperm and ovum? A. Morula B. Embryo C. Zygote (*) D. Blastocyst

7. The morula is composed of approximately how many cells? A. 4 B. 8 C. 16 (*) D. 32

8. The inner cell mass of the blastocyst becomes the: A. Placenta B. Chorion C. Embryo (*) D. Amniotic sac

9. Implantation typically occurs on the: A. Posterior cervix B. Anterior fundus C. Uterine wall (fundal region) (*) D. Ovarian surface

10. Which layer prevents polyspermia? A. Corona radiata B. Zona pellucida (*) C. Chorionic villi D. Endometrium

11. Which hormone is first secreted by the placenta and detected in early pregnancy tests? A. Estrogen B. hPL C. hCG (*) D. Progesterone

12. What is the function of hPL? A. Stimulate ovulation B. Maintain corpus luteum C. Promote maternal metabolism and prepare for lactation (*) D. Inhibit uterine contractions

13. The placenta is fully formed by which week? A. 4th B. 8th C. 12th (*) D. 20th

14. What is the function of Wharton’s jelly in the umbilical cord? A. Nutrient exchange B. Prevents cord twisting C. Protects vessels from compression (*) D. Helps fetal movement

15. Which fetal membrane produces prostaglandins? A. Chorion B. Amnion (*) C. Decidua D. Zona pellucida

16. Which structure allows blood to bypass the fetal lungs? A. Foramen ovale B. Ductus arteriosus (*) C. Ductus venosus D. Pulmonary vein

17. What is the function of the foramen ovale? A. Filters maternal blood B. Directs oxygenated blood to fetal lungs C. Bypasses fetal liver D. Directs oxygenated blood from right atrium to left atrium (*)

18. From week 5–8 until term, the growing baby is called a: A. Zygote B. Embryo C. Fetus (*) D. Conceptus

19. Which germ layer forms the nervous system? A. Mesoderm B. Ectoderm (*) C. Endoderm D. Placental layer

20. At how many weeks can the baby's heartbeat be heard by Doppler? A. 4–6 B. 8–12 (*) C. 14–16 D. 18–20

21. The sense of touch begins to develop at: A. 4 weeks B. 8 weeks (*) C. 12 weeks D. 20 weeks

22. When does the fetus start respiratory movement? A. 16 weeks B. 20 weeks C. 24 weeks (*) D. 28 weeks

23. What defines oligohydramnios? A. Too much amniotic fluid B. Too little amniotic fluid (*) C. No amniotic fluid D. Normal fluid level

24. Monozygotic twins result from: A. Two sperm fertilizing two eggs B. One egg and one sperm splitting (*) C. Different eggs and different sperm D. Fertilization failure

25. Which of the following organs are formed by the endoderm? A. Skin and hair B. Bones and muscles C. Nervous system D. Gastrointestinal and respiratory tracts (*) تحويلة الى اسئلة اختبار متعدد الكتروني