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1 Nov 2021

Background and context

The hormones are the chemical messengers. They are responsible for either stimulating or inhibiting the function of a cell, tissue, or an organ. The hormones such as epinephrine, renin-angiotensin, and aldosterone help in regulating the needs of the body. These hormones also allow communication between the different organ systems.

Blood volume and blood pressure are determined by the concentration of salts and water. Through the kidneys, these are excreted in urine and perspired through the skin. The ingested amount and excreted amount of water and salts are highly variable. The kidneys function to regulate the loss by regulating the blood volume within the normal range.

The hormones which play the role of regulators include angiotensin II and aldosterone. Antidiuretic hormone is found as the major hormone which regulates the water reabsorption.

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