urea
urea
The lowest concentration of nitrogen can be found in the urine when it is first produced. As it accumulates in the bladder, so does the overall concentration of nitrogen.
alveoli
pulmonary veins
If your urine is too diluted, the test may show a false -. It's best to test with your first morning urine to ensure it is at it's highest concentration.
Carbon dioxide
Systematic tissue capillaries
The urine concentration increased.
on the palms of the hands
It is the Nile river.
The Nile River.
pulmonary arteries