Hormonal control of urine formation.|| What is ADH Hormone .

 

Hormonal control of urine formation.



Urine formation is under the control of two hormones- Aldosterone and Anti diuretic Hormone (ADH).


* ANTI-DIURETIC HORMONE (ADH)- This hormone released from the posterior lobe of pituitary gland, increases the permeability of the renal tubule to water. When the blood plasma is concentrated, more ADH is secreted and more water is reabsorbed in the urinary tubules. Hence urine passed out from body is concentrated, for example in summers. When the blood plasma is diluted ,  less ADH is secreted and less water is reabsorbed in the urinary tubule. In this case , dilute urine is passed out of the body, for example in winters. 

                 

Aldosterone - A hormone released from the adrenal cortex , influences re-absorption of sodium and potassium. This hormone regulates the amount of sodium and potassium that is to be retained in the blood and is to be excreted.







Some common diseases related to abnormal composition of urine.

Glycosuria:- Urine with sugar as in diabetes mellitus.

Albuminuria:- Urine with albumin

Ketonuria:- Urine with ketone body

Jaundice :- Urime with bile pigment

Pyuria :- Urine with pus cells

Haematuria:- Urine with blood cells

Diabetes Individual :- Urine with excess of water (Frequent passing out of large quantities of Urine). 





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