Excretory System
The process of removal of nitrogenous wastes from the body is called excretion .The organs of excretion are called excretory organs.
Human Excretory System
The human urinary system includes-the kidneys(two),Ureters(two)Urinary bladder(one)and urethra(one)
Kidney from the urine and controls osmatic pressure within the organism with respect to external environment.
Urin : It is yellow coloured fluid due nto presence of urochrome pigment.It is acidic in nature (pH 6.0) and is slightly heavier than water.It has a faint aromatic odour due to Urinoid.Daily urin output in normal adult is 1.5-1.8 L.Chemical composition of urine water is 95-96%,urea is 2% and some other substance like uric acid,creatinine,etc. are 2-3 %.
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