Testis Development Movie: Difference between revisions

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* <font color=red>'''Paramesonephric duct'''</font> (red left, Müllerian duct) degenerates under the influence of Mullerian duct inhibitory factor (MDIF) secreted by sertoli cells (differentiated by SRY expression).
* <font color=red>'''Paramesonephric duct'''</font> (red left, Müllerian duct) degenerates under the influence of Anti-Müllerian hormone (AMH) secreted by sertoli cells (differentiated by SRY expression). [https://www.omim.org/entry/600957 OMIM - AMH]
* <font color=darkmagenta>'''Mesonephric duct'''</font> (purple, Wolffian duct) differentiates under the influence of testosterone secreted by Leydig cells. Within the testes these mesonephric tubules grow towards the medullary sex cords and will form the rete teste. The mesonephric duct extending out of the gonad forms the ductus deferens.
* <font color=darkmagenta>'''Mesonephric duct'''</font> (purple, Wolffian duct) differentiates under the influence of testosterone secreted by Leydig cells. Within the testes these mesonephric tubules grow towards the medullary sex cords and will form the rete teste. The mesonephric duct extending out of the gonad forms the ductus deferens.
* <font color=orange>'''Medullary sex cords'''</font> (orange) form testis cords.
* <font color=orange>'''Medullary sex cords'''</font> (orange) form testis cords.

Revision as of 13:53, 6 June 2017

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<html5media height="650" width="350">File:Testis 001.mp4</html5media>

Click Here to play on mobile device

Gonad-icon.jpg

Testis and Ductus Deferens Development

This animation shows the process of early testis and ductus deferens (vas deferens) development.


  • Paramesonephric duct (red left, Müllerian duct) degenerates under the influence of Anti-Müllerian hormone (AMH) secreted by sertoli cells (differentiated by SRY expression). OMIM - AMH
  • Mesonephric duct (purple, Wolffian duct) differentiates under the influence of testosterone secreted by Leydig cells. Within the testes these mesonephric tubules grow towards the medullary sex cords and will form the rete teste. The mesonephric duct extending out of the gonad forms the ductus deferens.
  • Medullary sex cords (orange) form testis cords.
    • these later differentiate into solid seminiferous tubules that during puberty become hollow and actively produce spermatozoa.
  • The surrounding connective tissue (pink) differentiates to form stromal cells.
  • The tunica albuginea (white) covers the testis and bands extend inward to form connective tissue septa.


Compare this animation with that for ovary development animation.

Embryonically, both gonads (testis and ovary) and internal genital tracts (ductus deferens and uterus) begin with the same basic elements that have divergent pathways under the initial influence of the sex chromosomes (Y and X).


Genital Movie Links

Female: Ovary Development Movie - MP4 movie | External Genital Movie - MP4 movie | Internal Genital Movie - MP4 movie | Ovary Development | Uterus Development | Vagina Development | Movies
Male: Testis Development Movie - MP4 movie | External Genital Movie - MP4 movie | Testis Descent Movie - MP4 movie | Penis Development | Testis Development | AMH |Movies
Testis histology 02.jpg

Testis histology

Historic-testis.jpg

Testis historic drawing

Note these 2 images are anatomically the mirror image of the above animation.


Glossary Links: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Movies


Cite this page: Hill, M.A. (2024, March 28) Embryology Testis Development Movie. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Testis_Development_Movie

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G