Nephron

filtration of blood is carried by the

glomerulus

what forces blood through walls of capillaries

blood pressure

the walls of capillaries withold larger molecules such as

blood cells and protein to go back into circulation via efferent arterial

What will pass through capillary walls as filtrate

water, AA, glucose, NH3, Cl, Na, K, bicarbonate, urea, creatinine

filtrate is either

reabsorbed into blood stream or excreted by kidneys

80% of reabsoprtion occurs by

passive diffusion driven by concentration gradients

20% of reabosprtion is

active transport

nephron straddles the

cortex and medulla

secretion occurs in

PCT and DCT

secreted substances include

K+, H+

secretion occurs by

active transport

Water, salt, urea, ammonium ions pass through

proximal convuluted tubule

na+, cl, h20 are pumped out into * from PCT

blood stream

salt is pumped out of

ascending arm

sodium pumps drive water out of the

descending arm

DCT is under influence of what hormone

aldosterone

What is reabsorbed in DCT

NaCl, bicarbonate

what is secreted into DCT

K+, H+, NH3

urea escapes what

collecting duct

collecting tube is under influence of what hormone

ADH