Structural Unit of a Kidney
This page is the CodyCross answer for the clue below from All Things Water, Group 1285, Puzzle 3 (Atmospheric Pressure).
Question is: Structural Unit of a Kidney
and the answer is: NEPHRON
Word Meaning:
NEPHRON — (anatomy) The basic structural and functional unit of the kidney, which filters the blood in order to regulate chemical concentrations, and thereby produces urine.
Definitions from Wiktionary.