|Embryology - 9 Dec 2018 Expand to Translate|
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- 1 Introduction
- 2 Some Recent Findings
- 3 Movies
- 4 Mesonephic Duct Development
- 5 Foreskin Development
- 6 Postnatal Development
- 7 Abnormalities
- 8 Additional Images
- 9 References
- 10 Glossary Links
The external male genitalia consists of the penis and scrotum containing the testis.
Some Recent Findings
|More recent papers|
This table shows an automated computer PubMed search using the listed sub-heading term.
References listed on the rest of the content page and the associated discussion page (listed under the publication year sub-headings) do include some editorial selection based upon both relevance and availability.
G Mikuz Ectopias of the kidney, urinary tract organs, and male genitalia. [Ektopien der Niere, Harnwege und männlichen Geschlechtsorgane.] Pathologe: 2018; PubMed 30446779
Sung Jin Kim, Jongpill Lee, Chang-Hoo Park, Jong Yeon Park, Sang Hoon Song, Kun Suk Kim, Han Gwun Kim Urethral defect due to periurethral abscess treated with a tunica vaginalis flap: A case report. Medicine (Baltimore): 2018, 97(46);e13249 PubMed 30431606
G Mikuz [Ectopias of the kidney, urinary tract organs, and male genitalia. German version.] [Ektopien der Niere, Harnwege und männlichen Geschlechtsorgane.] Pathologe: 2018; PubMed 30135974
Mustafa Tosur, Lefkothea P Karaviti Case 2: 3-month-old Boy with Micropenis. Pediatr Rev: 2018, 39(7);363-365 PubMed 29967081
Muhammad Umar Nisar, Nadeem Akhtar, Mudassar Fiaz Gondal, Samer Sikander, Sana Viqar Aphallia: A Very Rare Congenital Anomaly, With Associated Genitourinary And Ano-Rectal Malformation. J Ayub Med Coll Abbottabad: 2018, 30(2);275-277 PubMed 29938433
Mesonephic Duct Development
The paired mesonephic ducts (Wolffian ducts) go through a series of developmental changes to form the male internal genital tract.
Foreskin development occurs during the second trimester.
- GA week 12 (Week 10) - ectoderm circular invagination at the glandular periphery now grows ventrally.
- GA week 13 (Week 12) - glans partially covered by the foreskin.
- GA week 16-17 (Week 14-15) - glans almost completely covered by the foreskin.
- GA week 18-19 (Week 16-17) - complete foreskin was formed.
- GA week 20 (Week 18) - entirely involves the glans.
External urethral opening on the ventral surface of penis, can extend back into scrotum. Abnormality due to failure of genital fold fusion during fetal development of the male external genitalia.
|Hypospadia Classification||Meatus Opening|
|Anterior||on inferior surface of glans penis|
|Coronal||in balanopenile furrow|
|Distal||on distal third of shaft|
|Penoscrotal||at base of shaft in front of scrotum|
|Scrotal||on scrotum or between the genital swellings|
|Perineal||behind scrotum or genital swellings|
|Links: Genital Abnormalities | Penis Development|
Uncommon abnormality associated with the penis, 1 in 30,000 infant males, external urethral opening on the dorsal surface of penis.
Endocrine disruptors in female reproductive tract development and carcinogenesis.
- Joel Shen, Maya Overland, Adriane Sinclair, Mei Cao, Xuan Yue, Gerald Cunha, Laurence Baskin Complex epithelial remodeling underlie the fusion event in early fetal development of the human penile urethra. Differentiation: 2016; PubMed 27397682
- Carla B M Gallo, Waldemar S Costa, Angelica Furriel, Ana L Bastos, Francisco J B Sampaio Modifications of erectile tissue components in the penis during the fetal period. PLoS ONE: 2014, 9(8);e106409 PubMed 25170760 | PLoS One.
- Favorito LA, Balassiano CM, Costa WS & Sampaio FJ. (2012). Development of the human foreskin during the fetal period. Histol. Histopathol. , 27, 1041-5. PMID: 22763876 DOI.
- Liang Ma Endocrine disruptors in female reproductive tract development and carcinogenesis. Trends Endocrinol. Metab.: 2009, 20(7);357-63 PubMed 19709900
Wisniewski H & Terry RD. (1968). Further studies on experimental neurofibrillary tangles. J. Neuropathol. Exp. Neurol. , 27, 149-50. PMID: 5690451
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Cite this page: Hill, M.A. (2018, December 9) Embryology Penis Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Penis_Development
- © Dr Mark Hill 2018, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G