Summary
Summary Part 3 -- Urogenital
- Course
- Institution
This is a summary of part 3 Urogenital of Evolutionary Development. With all of my summaries for this course I passed it with an 7,7 !
[Show more]
Seller
Follow
biomedicalsciencesvu
Reviews received
Content preview
Urogenital (kidney and lung)Kidney, ovary, testis, efferent ducts and secondary sexual glands
o Vertebrates: the 2 organ systems are connected
o Invertebrates: the 2 organ systems are not connected
Connection between kidney and gonads is of medical importance (urology)
Gonads + kidney + efferent ducts– mesodermal
Lungs + vagina + prostate – endodermal – develops from the gut and from pharynx
(keelholte)
Evolution of kidney and testes
Jawless fish (cyclostomes):
o Kidney: elongated organ that extend through
whole body. It has its own duct the
archinephric duct
o Testes: elongated organ that extend through
whole body. It has not its own efferent duct,
so sperm is shed in body cavity and leave
body cavity through small cannels
Gnathostomes: Kidney and tests use the same
efferent duct.
Urodeles: Kidney and testes have separate ducts
Amniotes (mammels, birds, reptiles):
o Kidney: has a new duct (ureter)
o Testes: the archinephric duct (ductus deferens) continues to
serve the testes
3 kidneys in embryonic development of chicken
1. Pronephros:
a. Small: no efferent duct
b. In neck region
c. Not functional in humans – degrade in 4-5 weeks
2. Mesonephros:
a. Efferent duct (archinephric duct)
b. In abdomen
c. Functional in foetus
Mesonephros archineprhic duct cloaca: urine, sexual ductus and
gut end here urachus tube umbillical cord
placenta mothers blood mothers kidney
3. Metanephros:
a. Efferent duct (urether)
b. Adult kidney
Gonad initailly is undifferentiated
Both male and female efferent ducts are formed
Wolffian serves as mesoneprhos (archinephric duct) en Mullerian
stretches to the outside and opens in the coelom
At week 6 SRY is activated and mesonephros is degenerate
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller biomedicalsciencesvu. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.24. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
61001 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now