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Fluid Balance and Blood Pressure

Fluid Balance and Blood Pressure

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Author: Aaron Mullally
Description:

This lesson will explain how the kidneys regulate blood pressure and fluid balance.

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Tutorial

Kidneys and Blood Pressure

Source: Pituitary Gland image, Creative Commons: http://bit.ly/UD1dr4; Adrenal Gland image, Public Domain: http://bit.ly/RTywYf; Renin image, Public Domain: http://bit.ly/UDwNF8

Terms to Know
Aldosterone

Nicknamed the “salt-retaining hormone," aldosterone stimulates the kidneys to retain sodium while simultaneously excreting potassium in the urine.

Antidiuretic Hormone (ADH)

A hormone secreted from the posterior pituitary gland that stimulates the kidneys to retain water, the receptors for ADH are located on the distal convoluted tubules and collecting ducts. High levels of ADH cause a person’s urine output to decrease and its color to become darker and more concentrated.

Diuretic

A medication or substance that increases a person’s urine output.

Renin

An enzyme found in blood that plays an important role in increasing blood pressure during hemorrhaging and diarrhea.