How do you think the waste substances in the blood such as urea is removed from the blood through dialysis?

Answer 1

The kidneys rem

ove urea and other toxic wastes

from

the blood, form

ing a dilute solution called

urine

in the process. The two kidneys have a

very extensive blood supply and the whole blood

supply passes through the

kidneys every 5 m

i

nutes,

ensuring that waste m

a

terials do

not build up. The

renal artery

carries blood

to

the kidney, while

the

renal vein

carries blood, now

with f

a

r lower concentrations of

urea and m

i

neral ions,

aw

ay

from

the kidney. The urine

form

ed passes down the

ureter

to the

bladder

.

Ureter

(u

rin

e

o

u

t

)