Loop of henle

Question 1

permeability of Thick ascending limb?

Answer 1

permeable to NaCl (pumped out), impermeable to H20

Question 2

permeability of Thin descending limb?

Answer 2

permeable to H20, leaves passively, (reabsorption)

Question 3

What is the function of the ascending limb?

Answer 3

create a concentration gradient of 200 mOsm/L, by pumping out sodium ions

Question 4

Is the fluid out of the loop of henle that enters the distal convoluted tubule hypertonic or hypotonic?

Answer 4

hypotonic