Nephron

n. single excretory unit of a kidney (Zoology, Anatomy)

A nephron (from Greek νεφρός (nephros) meaning "kidney") is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine. A nephron eliminates wastes from the body, regulates blood volume and pressure, controls levels of electrolytes and metabolites, and regulates blood pH. Its functions are vital to life and are regulated by the endocrine system by hormones such as antidiuretic hormone, aldosterone, and parathyroid hormone.
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Nephron /neph·ron/ the structural and functional unit of the kidney, numbering about a million in the renal parenchyma, each being capable of [more]Nephron - Community and Resources

Noun
1. any of the small tubules that are the excretory units of the vertebrate kidney
(synonym) uriniferous tubule
(hypernym) tubule
(part-holonym) kidney
(part-meronym) malpighian body, malpighian corpuscle, renal corpuscle

n. nephron, single excretory unit of a kidney (Zoology, Anatomy)