Kidney Function

Question 1

what are 5 of the functions of the kidney

there are more

Answer 1

water balance, salt balance, maintenance of plasma volume/osmolarity, acid-base balance, excretion of metabolic waste products

Question 2

what is secreted by the kidney

Answer 2

renin(for RAAS, control of BP) and erythropoietin(EPO, for RBC production)

Question 3

what conversion occurs at the kidney

Answer 3

conversion of vitamin D into active form, called Calcitriol(regulated Ca2+ absorption in GI tract)

Question 4

what are the 2 different types of nephron

Answer 4

juxtamedullary nephron(~20%) and cortex nephron(~80%)

Question 5

what nephron is responsible for concentrating the urine

Answer 5

juxtameduallary nephron

Question 6

what is the vasculature supporting the Loop of Henle of the juxtamedullary nephrons called

Answer 6

the vasa recta

Question 7

what cells secrete renin

Answer 7

granular cells

Question 8

what is the role of the macula densa and where is it found

Answer 8

role = detecting amount of salt present in tubular fluid, releasing chemical signals that influence blood flow by vasoconstriction/dilatation
found in juxtaglomerular apparatus