![]() ![]() Phosphate – an anion that is predominantly intracellular than extracellular.Potassium – occurs more inside the cells than in extracellular fluid.Electrolytes that are in relatively small amounts in the extracellular fluid:.Bicarbonates – important in maintaining the acid-base balance abundant in intracellular as well.Chloride – the predominant anion in the extracellular fluid.Sodium – the osmotically active cation in the extracellular fluid. ![]() Major electrolytes in extracellular fluid:.Other electrolytes present but are comparatively at lower levels (than the intracellular fluid) are potassium, phosphate, and magnesium. In extracellular fluid, electrolytes that are abundant or in relatively high amounts are sodium, chloride, and bicarbonates. Extracellular fluid differs from intracellular body fluid in sodium, potassium, and protein content. Fat tissues tend to have less water than lead body mass.Īlmost 20% of the total body weight is an extracellular body fluid (Figure 2). Males have a higher amount of body fluid as compared to females as females have higher body fat. ![]() Figure 3: A representative image of the different types of fluid. ![]() Intracellular body fluid is composed of a high amount of potassium, phosphate, and magnesium while low amounts of bicarbonate, chloride, sodium, and protein (Figure 3). Intracellular body fluid is also involved in maintaining osmolarity via sodium-potassium pump wherein potassium ions are primarily intracellularly distributed. The majority of the chemical/metabolic reactions of the body occur in the cytoplasm or the intracellular body fluid. Figure 2: Distribution proportion of different types of fluid in different fluid compartments of the human body. Bodily fluids are distributed in different fluid compartments as shown in Figure 2. Intracellular fluid forms ~40% or 2/3rd of the body fluid. The intracellular fluid largely remains unchanged and does not undergo rapid changes or fluctuations. The fluid that is present inside the cell i.e., in the cytoplasm of the cell. Types of body fluids can be categorized based on the location: It is composed of water, dissolved ions, and other molecules.Įxamples of body fluids: amniotic fluid, aqueous humor, bile, blood plasma, breast milk, cerebrospinal fluid, cerumen, chyle, exudates, gastric juice, lymph, mucus, pericardial fluid, peritoneal fluid, pleural fluid, pus, saliva, sebum, serous fluid, semen, sputum, synovial fluid, sweat, tears, urine, vomit In humans, the intracellular fluid makes up 67% of the total body water composition.
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