Testis Descent Movie

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Embryology - 26 Apr 2024 Expand to Translate
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<html5media height="400" width="600">File:Testis_Descent_001.mp4</html5media>

Beginning

End

Testis Descent

Data from a study of male human fetal (between 10 and 35 weeks) gonad position^[1]

10 to 23 weeks - (9.45%) had migrated from the abdomen and were situated in the inguinal canal
24 to 26 weeks - (57.9%) had migrated from the abdomen
27 to 29 weeks - (16.7%) had not descended to the scrotum

Gubernaculum

mesenchymal structure occurring associated with gonad development and involved in testes descent.
Two factors - insulin-like peptide hormone 3 (INSL3) and androgen, have been shown to be involved with gubernaculum development. Insulin-like peptide 3 (INSL3) hormone receptor is RXFP20.

Human gubernaculum development: 8-12 weeks - mesonephric fold at or near the gonad; 20-25 weeks - connected to the testis or uterus.^[2]

References

↑ Sampaio FJ & Favorito LA. (1998). Analysis of testicular migration during the fetal period in humans. J. Urol. , 159, 540-2. PMID: 9649288
↑ Niikura H, Okamoto S, Nagase S, Takano T, Murakami G, Tatsumi H & Yaegashi N. (2008). Fetal development of the human gubernaculum with special reference to the fasciae and muscles around it. Clin Anat , 21, 547-57. PMID: 18661576 DOI.

Genital Movie Links

Historic Embryology - Genital
General: 1901 Urinogenital Tract \| 1902 The Uro-Genital System \| 1904 Ovary and Testis \| 1912 Urinogenital Organ Development \| 1914 External Genitalia \| 1921 Urogenital Development \| 1921 External Genital \| 1942 Sex Cords \| 1953 Germ Cells \| Historic Embryology Papers \| Historic Disclaimer
Female: 1904 Ovary and Testis \| 1904 Hymen \| 1912 Urinogenital Organ Development \| 1914 External Genitalia \| 1914 Female \| 1921 External Genital \| 1927 Female Foetus 15 cm \| 1927 Vagina \| 1932 Postnatal Ovary
Male: 1887-88 Testis \| 1904 Ovary and Testis \| 1904 Leydig Cells \| 1906 Testis vascular \| 1909 Prostate \| 1912 Prostate \| 1914 External Genitalia \| 1915 Cowper’s and Bartholin’s Glands \| 1920 Wolffian tubules \| 1935 Prepuce \| 1935 Wolffian Duct \| 1942 Sex Cords \| 1943 Testes Descent \| Historic Embryology Papers \| Historic Disclaimer

Cite this page: Hill, M.A. (2024, April 26) Embryology Testis Descent Movie. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Testis_Descent_Movie

What Links Here?

[PMID9649288-1] Sampaio FJ & Favorito LA. (1998). Analysis of testicular migration during the fetal period in humans. J. Urol. , 159, 540-2. PMID: 9649288

[PMID18661576-2] Niikura H, Okamoto S, Nagase S, Takano T, Murakami G, Tatsumi H & Yaegashi N. (2008). Fetal development of the human gubernaculum with special reference to the fasciae and muscles around it. Clin Anat , 21, 547-57. PMID: 18661576 DOI.

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