Kidney processes 2
- Created by: vezting
- Created on: 28-04-16 12:24
View mindmap
- Kidney processes 2
- The DCT
- 1: the first part acts like the loop of Henle
- 2: the second part acts like the collecting duct
- 3: K+ ions are transported here for excretion
- Na+ ions are actively transported out
- The Collecting duct
- 1: if water potential is too low there is not enough fluid in the blood
- 2: water therefore moves out of the osmoreceptor in the hypothalamus
- 3: more ADH is released from the posterior pituitary
- 4: ADH attaches to receptors in the wall of the collecting duct
- 5: vesicles containing aquaporin fuse with cell surface membrane creating water channels
- 6: more water is reabsorbed by osmosis down the water potential gradient
- 7: there is a potential gradient as there is high conc of transport ions into the tissue fluid
- 8: the water potential of the blood should start to increase to normal level
- 9: a small amount of concentrated urine will be produced
- The DCT
Comments
No comments have yet been made