Aspect of homeostasis concerning control of the amount of water in an organism
Not to be confused with Water balance.
Fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. The core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in; for example, in humans, the output (via respiration, perspiration, urination, defecation, and expectoration) must equal the input (via eating and drinking, or by parenteral intake). Euvolemia is the state of normal body fluid volume, including blood volume, interstitial fluid volume, and intracellular fluid volume; hypovolemia and hypervolemia are imbalances. Water is necessary for all life on Earth. Humans can survive for 4 to 6 weeks without food but only for a few days without water.
Profuse sweating can increase the need for electrolyte replacement. Water-electrolyte imbalance produces headache and fatigue if mild; illness if moderate, and sometimes even death if severe. For example, water intoxication (which results in hyponatremia), the process of consuming too much water too quickly, can be fatal. Deficits to body water result in volume contraction and dehydration. Diarrhea is a threat to both body water volume and electrolyte levels, which is why diseases that cause diarrhea are great threats to fluid balance.
Fluidbalance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and...
temperature and fluidbalance, being kept within certain pre-set limits (homeostatic range). Other variables include the pH of extracellular fluid, the concentrations...
life self-regulates its biochemistry (homeostasis) produce fluidbalance across the fluid compartments. Water and electrolytes are continuously moving...
organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluidbalance and the...
In fluid mechanics, hydrostatic equilibrium (hydrostatic balance, hydrostasy) is the condition of a fluid or plastic solid at rest, which occurs when external...
the most primitive types of fluidbalance found in animals is among these creatures; whenever a rise in extracellular fluid occurs, the blood pressure...
fluids, resulting in the basic instinct of animals to drink. It is an essential mechanism involved in fluidbalance. It arises from a lack of fluids or...
Fluid replacement or fluid resuscitation is the medical practice of replenishing bodily fluid lost through sweating, bleeding, fluid shifts or other pathologic...
of a healthy kidney include maintaining a person's fluidbalance, maintaining an acid-base balance; regulating electrolytes including sodium, potassium...
maintenance of fluidbalance. In healthy people, the drinking of extra water produces mild diuresis to maintain the body water balance. Many people with...
An antidiuretic is a substance that helps to control fluidbalance in an animal's body by reducing urination, opposing diuresis. Its effects are opposite...
weight and by volume. Ensuring the right amount of body water is part of fluidbalance, an aspect of homeostasis. By weight, the average adult human is approximately...
in the adrenal cortex and influence salt and water balances (electrolyte balance and fluidbalance). The primary mineralocorticoid is aldosterone. The...
electrolyte found in extracellular fluid and potassium is the main intracellular electrolyte; both are involved in fluidbalance and blood pressure control....
of water in the eyes. Blocking this enzyme shifts the fluidbalance in the eyes to reduce fluid build-up thereby relieving pressure. Carbonic anhydrase...
generation of nerve impulses and for maintenance of electrolyte balance and fluidbalance. In animals, sodium ions are necessary for the aforementioned...
help to regulate heart and neurological function, fluidbalance, oxygen delivery, acid–base balance and much more. Electrolyte imbalances can develop...
the renal pelvis. The collecting duct participates in electrolyte and fluidbalance through reabsorption and excretion, processes regulated by the hormones...
functions of the kidney, including maintenance of acid-base balance; regulation of fluidbalance; regulation of sodium, potassium, and other electrolytes;...
Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them.: 3 It has applications...
metabolic acidosis, high potassium levels, uremia, changes in body fluidbalance, effects on other organ systems, and death. People who have experienced...
liver function, diabetic and parathyroid status, and electrolyte and fluidbalance, but this type of screening has its limitations. Abnormal values from...
ISBN 978-1-4160-2328-9. Maughan RJ, Griffin J (December 2003). "Caffeine ingestion and fluidbalance: a review" (PDF). Journal of Human Nutrition and Dietetics. 16 (6):...
Renal functions include maintaining an acid–base balance; regulating fluidbalance; regulating sodium, potassium, and other electrolytes; clearing toxins;...
the subfornical organ. They contribute to osmoregulation, controlling fluidbalance in the body. Osmoreceptors are also found in the kidneys where they...
physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids—liquids and gases. It has several...
a severe illness or major surgery. The shifting of electrolytes and fluidbalance increases cardiac workload and heart rate. This can lead to acute heart...
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