44.3 kidney filtration

Question 1

how does filtration work

Answer 1

1- blood pressure forces fluid from the blood in the glomerulus into the bowman’s capsule
2- the capillaries and specialized cells in the capsule are permeable to small solutes and water
3- the large molecules and plasma proteins are left

Question 2

the filtrate’s path

Answer 2

1-the proximal tubule
2-the loop of henle
3-distal tubule
4-collecting duct
5-renal pelvis
6-drained by the ureter

Question 3

only mammals and some birds have the

Answer 3

loop of henle

Question 4

human nephrons

Answer 4

85% cortical nephrons (in the cortex)

15% juxtameullary nephrons (goes into the medulla)

Question 5

what allows humans to produce hyper osmotic urine ti body fluids (important for water conseration)

Answer 5

the juxtamedullary nephrons

Question 6

each nephron is supplied by blood from

Answer 6

an afferent arteriole

goes of the renal artery

Question 7

the capillaries converge as they leave the glomerulus forming an

Answer 7

efferent arteriole

Question 8

branches of this vessel form the

Answer 8

peritubular capillaries

Question 9

a 3rd set of capillaries extend downward and form the

Answer 9

vasa recta