Overview nephron

Question 1

1) Bowmans capsule

Answer 1

1) BP in capillaries at one end of glomerulus pushes fluid into Bowmans capsule
2) RBC and large proteins (albumin) unable pass from glomerulus to bowmans capsule
3) Water, ions, aa small enough to pass (filtrate)

Question 2

2) Proximal convoluted tubule

Answer 2

1) Filtrate travels from Bowmans capsule into proximal convoluted tubule
2) Reabsorb important nutrients present in filtrate
3) Nutrients transported out nephron into interstitial space
4) Nutrients reabsorbed by capillaries
5) Waste products transported into filtrate

Question 3

3) Descending limb of loop of henle

Answer 3

1) Descending limb only permeable water
2) Descending loop descends from cortex into medulla the concentration of salts in interstitium increases
3) Water diffuse out filtrate in descending part loop
4) Urine conc increase

Question 4

4) Ascending loop of henle

Answer 4

1) Ascending loop only permeable salts not water
2) Salts leave via passive and active diffusion
3) Filtrate dilutes- make blood hypertonic

Question 5

5) Distal convoluted tubule

Answer 5

1) Ammonia and urea transported into filtrate for excretion
2) Calcium and sodium continue reabsorbed
3) Water follow sodium out

Question 6

6) Collecting ducts

Answer 6

1) Combine filtrate from other nephrons
2) More water leaves
3) Variable permeability- aldosterone and ADH

Question 6

6) Collecting ducts

Answer 6

1) Combine filtrate from other nephrons
2) More water leaves
3) Variable permeability- aldosterone and ADH