Medical Embryology Models

Product Description

1. EMBRYONIC DEVELOPMENT

    FROM 1^st. week to 7 week.                       

2. Various Stages of Mitosis.                                                                                       

3. Ist. & 2^nd Meiotic Divisions.                                                                         

4. Events occurring during the 1^st. and

    2^nd maturation division.                                 

5. Normal Maturation Division.                                                                        

6. Embryo at the end of 3^rd. week.                                                                               

7. Maturing Follicle.                                                                                                     

8. Maturation of Oocyte.                                                                                             

9. Spermatogenesis in human.                                                                          

10. Important stages in transformation of the

human spermatid in to spermatozoon.

11. Abnormal Germ Cell in Male & Female.                                                                

FIRST WEEK OF DEVELOPMENT:

12. Changes occurring in the primordial follicle during

       the first half of the ovarian cycle.                                                                                         

13. Graafian follicle just before rupture.                                                            

14. Relationship of fimbriae and ovary .                                                            

15. Development of the zygote from the two-cell stage

      to the late morula stage.                                                                                                     

16. Section of a 107 =- cell human blastocyst.                                                  

17. Events taking place during the 1^st. week of human

      development.                     

SECOND WEEK OF DEVELOPMENT:

18. 9-Day human blastocyst.                                                                                        

19. 12-days human blastocyst.                                                                         

20. 13-day human  blastocyst.                                                                                     

THIRD WEEK OF DEVELOPMENT:

21. A Schematic view of an implantation site at the

end of the 2^nd. week.

22. A schematic view of the dorsal side of the germ

      disc from a 16 day embryo.

23. Formation of notochord.                                                                                        

24. Development of a villus.                                                                                         

25. Longitudinal section through a villus at the end

     of the 3^rd  week of development.                                                                                         

26. A presomite embryo and the trophoblast at the

     end of the 3^rd  week.                                                                                                                       

EMBRYONIC PERIOD 3^rd. to 8^th  weeks:

27. 16 day presomite embryo.                                                                                     

28. 19 day presomite embryo.                                                                                     

29. Dorsal view of human embryo of 22-days

      seven distinct somites are visible on

each side of neural tube .                                                                

30. Lateral view of a 14-somite embryo.                                                                      

31. Transverse section showing development of the

      mesodermal germ layer day 17, day 19, day 20, day 21.

32. Successive stages in development of a somite 4 stages.                           

33. A transverse section through a 21 day embryo in the

      region of the mesonephros.

34. Extraembryonic blood vessel formation in the villi.           

35. Sagittal midline sections of embryos at various

      stages of development to demonstrate

     cephalocaudal folding and its effect on position

     of the endoderm-lined cavity.

36. Transverse section through embryos at various stages of

      development to show the effect of lateral folding

      on the endoderm-lined cavity.                                                                                                                                                                                                        

FETAL MEMBRANE & PLACENTA:

37. Human embryo at the beginning of the 2^nd.

      month of development.                   

38. Structure of villi at various stages of development.                                       

39. The relation of fetal membranes and wall of the uterus.                                            

40. Placenta in the second half of pregnancy.                                                                

41. Full term placenta.                                                                                     

42. Development of dizygotic twins. Each embryo

      has its own amnion.            

43. The relation of fetal membranes in monozygotic twins.