Excretory System

The accumulation of urea in the blood due to malfunctioning of kidney is referred as uremia. This disorder of excretory system results from the decreased excretion of urea in kidney tubules due to infection by bacteria (nephritis). The excess amount of urea poisons the cells (at high concentratation). Renal calculi (singcalculus) is formed by precipitation of oxalate or uric acid Glomerulenephritis is inflamation of glomerule and is caused by drug reaction, bacterial toxin and injury and allow the entry of RBC and protein in filtrate.

A nephron is a unit of structure and function in a kidney. Each kidney contains about a million nephrons. A nephron is a long tubule differentiated into Bowman's capsule , loop of Henle and , each part is having its own particular function