ANAT2341 Lab 8 - Early Embryo: Difference between revisions
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==Kidney and Mesonephric Duct== | ==Kidney and Mesonephric Duct== | ||
{| | {| | ||
| | | width=380px|<html5media height="520" width="360">File:Urogenital_sinus_001.mp4</html5media> | ||
[[Media:Urogenital_sinus_001.mp4|'''Click Here''' to play on mobile device]] | |||
| '''Now go back and observe the development of the intermediate mesoderm.''' | | '''Now go back and observe the development of the intermediate mesoderm.''' | ||
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==Primitive Urogenital Sinus== | ==Primitive Urogenital Sinus== | ||
{| | {| | ||
| | | width=440px|<html5media height="440" width="420">File:Urogenital_septum_001.mp4</html5media> | ||
[[Media:Urogenital_septum_001.mp4|'''Click Here''' to play on mobile device]] | |||
| '''Stages in septation of the urogenital sinus between Week 4 and 6.''' | | '''Stages in septation of the urogenital sinus between Week 4 and 6.''' | ||
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===Gonadal Development Comparison=== | ===Gonadal Development Comparison=== | ||
Now directly compare the development of the male and female gonad (click image to start, these may not be synchronised). | Now directly compare the development of the male and female gonad (click image to start, these may not be synchronised). | ||
Latest revision as of 15:36, 23 September 2014
ANAT2341 Lab 8: Introduction | Sex Determination | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Online Assessment | Genital Quiz |
Week 4 to 5
<html5media height="580" width="550">File:Stage13 GIT3d.mp4</html5media> | Begin by observing the internal structure of the embryo at the end of week 4 and the beginning of week 5.
Colour code:
|
Mesonephros and Mesonephric Duct
E1-G4: Section passes dorsally to the mesonephros. Return to G4 and then follow the caudal route of the mesonephric duct into the sacral region.
E1L | E2L | E3L | E4L | E5L | E6L | E7L |
F1L | F2L | F3L | F4L | F5L | F6L | F7L |
G1L | G2L | G3L | G4L |
Kidney and Mesonephric Duct
<html5media height="520" width="360">File:Urogenital_sinus_001.mp4</html5media> | Now go back and observe the development of the intermediate mesoderm.
|
Primitive Urogenital Sinus
<html5media height="440" width="420">File:Urogenital_septum_001.mp4</html5media> | Stages in septation of the urogenital sinus between Week 4 and 6.
Several different defects in both sexes can occur if this septation process is not correctly aligned (rectourethral fistula, rectovaginal fistula). |
Gonad Development
Male Testis
Female Ovary
Gonadal Development Comparison
Now directly compare the development of the male and female gonad (click image to start, these may not be synchronised).
Additional Information
The following figures are from a recent review of Sex determination and gonadal development in mammals.[1]
- Signaling in genital development
- Sex reversal in humans caused by abnormal X-Y exchange
- Mesonephric tubules in the 11.5 dpc mouse urogenital ridge
- Development and differentiation of the genital duct system
- The migratory pathway of primordial germ cells
- Structure of the early fetal testis
- Differentiation of pre-Sertoli cells into Sertoli cells
- Model for cell-autonomous and prostaglandin-mediated upregulation of Sox9 in pre-Sertoli cells
- Visualization of testicular cell types
- Ovary and follicle development and differentiation
- Postulated molecular pathway leading to the formation of the bipotential genital ridge
- Structure of mouse and human SRY protein
- Postulated interaction of molecular players involved in early testicular development
References
- ↑ <pubmed>17237341</pubmed>| Physiol. Rev.
Nussey S, Whitehead S. Endocrinology: An Integrated Approach. Oxford: BIOS Scientific Publishers; 2001. Chapter 6 The gonad
ANAT2341 Lab 8: Introduction | Sex Determination | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | Online Assessment | Genital Quiz |
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Cite this page: Hill, M.A. (2024, April 28) Embryology ANAT2341 Lab 8 - Early Embryo. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/ANAT2341_Lab_8_-_Early_Embryo
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G