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					                           Development




                            1




                                    2. What stage of development?




3. What stage of development?       4. What stage of development?




                                1
                            Development




5. What stage of development?        6. What stage of development?




7. What stage of development?        9. What stage of development?

8. Is #7 solid or hollow?            10. Is #9 solid or hollow?



                                 2
          Development


11                            12
                              15

                              13



14

           1st Month




     18
                        17


     16




                             69

                             19

21

                             20


          2nd Month
               3
                  Development




     23




     26


                    3rd Month




25                                          24


                                            22




                 4th & 5th Month

          27. What position is the fetus?



                         4
                              Development




                       5th Month (Fraternal twins)

28. What position is the fetus?         29. What position is the fetus?




                              5th Month
                     30. What position is the fetus?

                                    5
                         Development




                          5th Month
                 31. What position is the fetus?




                                                          24
                           23


                                                          11

                                                          32 & 33



26                         22

                           18
     7th Month                                7th Month
                                6
               Development
          35


36


37

                          3
          34


39

                     38
                                         7




                              42
     40




                                             41
                                             40




                43             44   45



                      7
                                Development

                 47                 48               49


46



                                                                 * Burrows into
                                                                 endometrium




                                                                 50

21                                                               51


                                                                 17

                                                16


                      6 Weeks


       8 Weeks
                                                      14 Weeks


                                     12 Weeks


     10 Weeks
                                     8
          Development




                                  11


23
                                   51

19


24
                                   52

58
                                   53


57




     56   55       54   16   17


               9
                Development



                11         23   51




                                          59




                                          19

58
                                          24


54

                                          17
 57




      61   55        56    60        16



                      10
                                     Development
     Maternal portion of placenta:
     Decidua basalis                  Fetal portion of placenta:
                                      Chorionic villi

                                                                   32




68                                                                       23

                                                                   33
67

                                                                         62
66
                                                                         63

65

                                                                        64
51




                                                                        24




                                          11
     Development

1          35
2          36
3          37
4          38
5          39
6          40
7          41
8          42
9          43
10         44
11         45
12         46
13         47
14         48
15         49
16         50
17         51
18         52
19         53
20         54
21         55
22         56
23         57
24         58
25         59
26         60
27         61
28         62
29         63
30         64
31         65
32         66
33         67
34         68
           69
         12
                          Development
                             Tips
 The umbilical cord has:
    - 2 Arteries
    - 1 vein
 Blood supply for the fetus.
    - The umbilical cord supplies blood like the heart to the lungs
          1. Arteries: Deoxygenated blood to placenta (Blue)
          2. Vein: Oxygen rich blood from placenta (Red)
          (Normally, arteries are red and veins are blue)




                                13
                         Development

 Embryo becomes a fetus after the 8th week.

 On the Full Term Fetus:
    - Urinary bladder is compressed by the fetus.




                               14

				
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