Nephron of Kidney

Question 1

-the proximal convoluted tubule

Answer 1

• most reabsorption occurs (water and nutrients)
• descend the limb of the nephron
  
  • permeable to water, water reabsorbed
• the loop
  
  • urea enters the loop from the interstitial region and is recycled back into urine

Question 2

-Ascending limb

Answer 2

• Ascending limb is permeable to salt but not h20

- as you ascend into a weakly concentrated interstitial region, the sal will not reabsorb

Question 3

-Distal convoluted tubule

Answer 3

• ADH and Aldosterone dependent
  
  • If ADH is present, what is reabsorbed
  • Aldosterone is present, sodium is reabsorbed and water passively flows

Question 4

-Collecting duct

Answer 4

• Collecting duct is also hormone dependent
  
  • ADH present, significant water reabsorption resulting in small amounts of highly concentrated urine
  • it gets so concentrated, that neat the bottom of the collecting duct, even urea is reabsorbed into the interstitial region
  • secretions of substances such as hydrogen ions, ammonia, and drugs occur primarily in the convoluted tubules
  • here substances can pass directly from blood stream into these tubules

Question 5

Nephron

Answer 5

Functional unit of kidney

Question 6

Glomerulus

Answer 6

Network of permeable blood capillaries

Question 7

Renal tubules

Answer 7

• Glomerular capsule (cortex)
  
  • cup like structure to catch what is being filtered through
• Proximal Convoluted tubule (cortex)
• descending limb of loop of nephron
• loop of nephron
• ascending limb of loop
• distal convoluted tubule (cortex)
• Collecting tubule