ADAPTIONS

• ADAPTION OF A DESERT RAT COMPARED TO A NORFOLK RAT?

  longer Loop of Henle
• HOW DOES A LONGER LOOP OF HENLE HELP A DESERT RAT?

  • higher SA for carrier an channel proteins
  • more active transport/ facilitated diffusion of Na+/ Cl- into blood
  • steeper water potential gradient between glomerular filtrate and blood
  • more water reabsorption by osmosis (into blood)
  • less water lost in urine
  • urine is more concentrated and in a lower volume