Body water

total body waterWaterfluidindicator dilutionlargely composed of water moleculestotal amount of watertotal volume of water in one's body
In physiology, body water is the water content of an animal body that is contained in the tissues, the blood, the bones and elsewhere.wikipedia
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Human body

bodyhuman anatomyhuman physiology
This water makes up a significant fraction of the human body, both by weight and by volume.
The adult male body is about 60% water for a total water content of some 42 litres.

Body fluid

bodily fluidbodily fluidsbody fluids
Most of animal body water is contained in various body fluids. Volume contraction is a decrease in body fluid volume, with or without a concomitant loss of osmolytes.
In normal healthy men, the total body water is about 60% of the total body weight; it is slightly lower in women.

Extracellular fluid

interstitial fluidinterstitial spaceinterstitial
These include intracellular fluid; extracellular fluid; plasma; interstitial fluid; and transcellular fluid.
Total body water in humans makes up between 45 to 75% of total body weight.

Fluid balance

diuresiseuvolemicfluid
Ensuring the right amount of body water is part of fluid balance, an aspect of homeostasis.
Deficits to body water result in volume contraction and dehydration.

Transcellular fluid

These include intracellular fluid; extracellular fluid; plasma; interstitial fluid; and transcellular fluid.
Transcellular fluid is the portion of total body water that represents all body fluids which are formed from the transport activities of cells.

Homeostasis

homeostaticequilibriumimmunomodulation
Ensuring the right amount of body water is part of fluid balance, an aspect of homeostasis.
The total amount of water in the body needs to be kept in balance.

Bioelectrical impedance analysis

bioimpedancebioimpedance analysis
Another method of determining total body water percentage (TBW%) is via Bioelectrical Impedance Analysis (BIA).
BIA actually determines the electrical impedance, or opposition to the flow of an electric current through body tissues which can then be used to estimate total body water (TBW), which can be used to estimate fat-free body mass and, by difference with body weight, body fat.

Evans Blue (dye)

evans blue
blood plasma: Evans blue
Because of this, it can be useful in physiology in estimating the proportion of body water contained in blood plasma.

Fluid compartments

intracellular fluidinterstitial spaceintracellular
These include intracellular fluid; extracellular fluid; plasma; interstitial fluid; and transcellular fluid.
About two thirds of the total body water of humans is held in the cells, mostly in the cytosol, and the remainder is found in the extracellular compartment.

Dehydration

dehydrateddehydratedehydrating
The loss of the body water component of body fluid is specifically termed dehydration.
In physiology, dehydration is a deficit of total body water, with an accompanying disruption of metabolic processes.

Drinking

hydrateddrinkfluid intake
The usual way of adding water to a body is by drinking.
A decline in total body water is called dehydration and will eventually lead to death by hypernatremia.

Tritiated water

Detritiation Reactionssuper-heavy waterT 2 O
total body water: tritiated water or heavy water.
Tritiated water can be used to measure the total volume of water in one's body.

Volume contraction

Volume contraction is a decrease in body fluid volume, with or without a concomitant loss of osmolytes.
TBW b = Total body water before loss (approximately 60% of body weight, or using tritiated water or deuterium)

Physiology

physiologistphysiologicalphysiologically
In physiology, body water is the water content of an animal body that is contained in the tissues, the blood, the bones and elsewhere.

Water

H 2 Oliquid wateraqueous
In physiology, body water is the water content of an animal body that is contained in the tissues, the blood, the bones and elsewhere.

Animal

animalsmetazoanmetazoa
In physiology, body water is the water content of an animal body that is contained in the tissues, the blood, the bones and elsewhere.

Compartment (pharmacokinetics)

compartmentbody fluid compartmentsfluid compartment
The percentages of body water contained in various fluid compartments add up to total body water (TBW).

Body composition

fat free massbody composition monitorsfat-free mass
However, this varied substantially by age, sex, and adiposity (amount of fat in body composition).

Blood plasma

plasmaserumblood serum
These include intracellular fluid; extracellular fluid; plasma; interstitial fluid; and transcellular fluid. blood plasma: Evans blue

Gastrointestinal physiology

intestinal motilitygastrointestinal motilityhypermotility
Water is also contained inside organs, in gastrointestinal, cerebrospinal, peritoneal, and ocular fluids.

Cerebrospinal fluid

cerebral spinal fluidCSFspinal fluid
Water is also contained inside organs, in gastrointestinal, cerebrospinal, peritoneal, and ocular fluids.

Peritoneal fluid

peritoneal
Water is also contained inside organs, in gastrointestinal, cerebrospinal, peritoneal, and ocular fluids.

Aqueous humour

aqueous humoraqueous fluidocular
Water is also contained inside organs, in gastrointestinal, cerebrospinal, peritoneal, and ocular fluids.

Adipose tissue

adiposebody fatfat
Adipose tissue contains about 10% of water, while muscle tissue contains about 75%.

Muscle tissue

musclemuscle fibresmuscular
Adipose tissue contains about 10% of water, while muscle tissue contains about 75%.