væskebalanseorgan

A væskebalanseorgan, often translated as a fluid balance organ, refers to a biological structure or system within an organism responsible for maintaining homeostasis of bodily fluids. This involves regulating the amount of water and electrolytes (such as sodium, potassium, and chloride) within the body. Proper fluid balance is crucial for numerous physiological processes, including cell function, nutrient transport, waste removal, and maintaining blood pressure.

In many animals, the kidneys play a primary role as the main væskebalanseorgan. They filter blood, reabsorb essential substances, and excrete excess water and waste products in the form of urine. Hormones, such as antidiuretic hormone (ADH) and aldosterone, also play significant regulatory roles, signaling to the kidneys and other tissues to adjust fluid and electrolyte levels.

Other organs and systems can also contribute to fluid balance. The skin, through sweating, can release water and electrolytes, though this is often a response to thermoregulation rather than direct fluid balance regulation. The digestive system absorbs water and electrolytes from ingested food and drink. In some simpler organisms, specialized structures like contractile vacuoles in protozoa perform a similar function of expelling excess water to prevent cell rupture. Disruptions to the væskebalanseorgan can lead to dehydration or overhydration, both of which can have severe health consequences.