Renal histo

Question 1

Border between cortex and medulla?

Answer 1

bounded by arcuate a/v and corpuscles

Question 2

Zones of medulla on longitudinal section?

Answer 2

outer stripe and inner stripe of outer medulla, and inner medulla

Question 3

what gives the outer stripe its histological appearance?

Answer 3

there’s thick descending limb and thick ascending limb

Question 4

what gives the inner stripe its appearance?

Answer 4

there’s thin descending limb of loop of Henle and thick ascending limb of loop of Henle

Question 5

what gives the inner medulla its appearance?

Answer 5

just thin loop of Henle

Question 6

what are the distinguishing features of DCT?

Answer 6

no microvilli, shorter epithelium, apical nuclei, larger lumen than PCT

Question 7

distinguishing features of PCT?

Answer 7

cell borders are less distinct, microvilli brush border, more eosinophilic and more mitochondria

Question 8

distinguishing features of cortical collecting duct?

Answer 8

very distinct cell borders, has principal cells, largest lumen