20 points! in which order do gases and nutrients pass from the mother, through the placenta, to the infant?

a. maternal blood pool; chorionic villus; umbilical vein
b. umbilical vein; chorionic villus; maternal blood pool
c. maternal blood pool; umbilical vein; chorionic villus
d. umbilical vein; maternal blood pool; chorionic villus

Option A

The embryo in the mother's womb cannot eat or drink anything from the outer world. It gets its nutrition from the placenta that is attachment found between the mother and embryo.

The nutrients and gases pass from the mother to embryo in following order. Maternal blood pool ; chorionic villus ; umbilical vein.

In this way the nutrients and gases are carried to the fetus and waste products are taken back through this umbilical cord back for purification.

yes i have all the correct answers

1. c 6. b. 11. c

2. a 7. d. 12. d

3. c 8. b. 13. c

4. d 9. c. 14. d

5. c 10. d. 15. a

16. d. 21. a

17. d.

18. a. 22-30 you must do on

19. d. your own

20. d.