3B - Uterus & early development - Model UT 1-3
1   Uterine Fundus
1a  Left Fallopian Tube
1b  Left Proper Ovarian Ligament
2   Uterine cavity
3   Endometrium
4   Myometrium
5   Vagina
5a  Vaginal Fornix
6   Corpus hemorrhagicum on left
6   Corpus luteum on right - produces progesterone
7   Corpus albicans
8   Primordial ovarian follicle
9   Primary ovarian follicle
10  Secondary ovarian follicle
11  Graafian follicles
12  Ovary
13  Graafian follicle
14  Ovulation
15  Fertilisation occurs here
16  Spermatazoa
17  ovum with pronuclei 
18  Two-cell stage
19  Four-cell stage
20  Fallopian tube
21  Morula
22  Blastocyst
23  Implanted embryo
26  Zona pellucida 
27  Ovum (oocyte)
28  Polar Bodies
29  Blastomeres
30  Trophoblasts - become cytotrophoblasts
31  Blastocele
32  Inner Cell Mass
33  Reflex decidua
34  Yolk Sac
34a Epiblast
34b Hypoblast
35  Amniotic Cavity
36  Extraembryonic Mesoderm
37  Coelom (these are cavities which will combine into a larger cavity)
38a Cytotrophoblasts which give rise to 38b
38b Syncytiotrophoblasts which are multinucleated cells that "invade" the uterine wall - will create fetal portion of placenta

[3B - Uterus Model - Diagrams 1a] 
[3B - Uterus Model - Diagrams 1b] 
[3B - Uterus Model - Diagrams 2a] 
[3B - Uterus Model - Diagrams 2b] 





Copyright © 2007 Michael H. Mitchell - All Rights Reserved