Urogenital System (18) Flashcards
1
Q
What does the excretory system do? What organs are involved?
A
- removes nitrogenous wastes and other harmful substances
- controls osmosis to achieve water and salt balance
- organ involved: kidneys, gills, skin, part of the digestive system, salt glands
2
Q
What does the reproductive system do? What are the organs involved?
A
- Produce and release gametes, bring them together, provide nourishment to young
- Gonads, ducts, cloaca, copulatory organs
3
Q
What is Pronephros?
A
- part of the kidney
- appears in all vertebrates but degenerated quickly
Functional in fish larvae, adult hagfish and some teleosts
4
Q
Mesonephros
A
- reduced segmentation
- all or most of the mesomere posterior to pronephros forms one kidney
5
Q
Metanephros
A
- never segmented
- kidney of adult amniotes
- Metanephric kidney is drained by a new duct
6
Q
Gonads develop from what?
A
- Mesomere genital ridges
- Primordial germ cells
7
Q
What do the Urogenital ducts include?
A
- Nephric ducts
- Müllerian ducts
- ureter
- accessory ducts
