Fluid balance

Definition

Fluid balance is the maintenance of the correct volume and concentration of body fluids. It is crucial for physiological functions, including nutrient transport, waste removal, and temperature regulation.

5 Must Know Facts For Your Next Test

1. Fluid balance is regulated by hormones like antidiuretic hormone (ADH) and aldosterone.
2. Kidneys play a major role in maintaining fluid balance by filtering blood and adjusting urine output.
3. Electrolytes such as sodium, potassium, and chloride are essential in regulating fluid distribution.
4. Dehydration occurs when fluid output exceeds intake, affecting cellular function and overall health.
5. Overhydration or water intoxication can disrupt electrolyte balance and lead to serious health issues.

Review Questions

• Which hormones are primarily involved in regulating fluid balance?
• How do kidneys contribute to maintaining fluid balance?
• What are the potential consequences of both dehydration and overhydration?

Related terms

Electrolytes: Minerals that help maintain fluid balance, nerve function, and muscle contractions.

Antidiuretic Hormone (ADH): A hormone that helps regulate water retention in the kidneys.

Aldosterone: A hormone that promotes sodium retention in the kidneys, indirectly influencing water retention.