Explain the negative feedback loop that allows kidneys to control the solute-water balance of the blood?

Question

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Answer 1

Urine composition and the rate of urine formation are largely regulated by hormones vasopressin, aldosterone, and angiotensin, and the enzyme rennin.



Vasopressin (ADH) is produced by the posterior pituitary gland and increases the bodies ability to resorbtion of water. it increase the permeability of the collecting ducts.

Diabetes insipidus is caused due to a lack of this hormone. It is characterized by thirst, and the production of large amounts of dilute urine.



Angiotensis and Aldosterone are hormones that regulate the amount of sodium that is resorbed from the filtrate in the nephrons. Aldosterone is produced by the adrenal gland. it promotes the resorbtion of sodium by the distal tube. Its action is directed by the bloods salt content. The kidney secretes an enzyme rennin, which changes a plasma protein angiotensinogen into angiotensin, which helps to increase the production of aldosterone and the blood pressure of the kidney.