Master this deck with 20 terms through effective study methods.
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Body fluids are the water in the body and the dissolved substances within it, regardless of whether they are located inside or outside the cells.
The total volume of body fluids in a 70 kg human is approximately 40 to 42 liters.
Water constitutes about 60-70% of body weight.
Proteins account for approximately 15-18% of body weight.
Fats represent about 12-15% of body weight.
Minerals account for about 5-8% of body weight.
Body water content varies based on body weight, age, sex, and the amount of body fat a person has.
Males typically have more body water than females because they have a greater muscle mass, which contains a higher percentage of water, and less body fat.
The average percentage of water in the human body is around 60%, with a range of 45-75% depending on various factors.
Total Body Water (TBW) refers to the total amount of water contained in the body, which can be calculated based on body weight.
The two main compartments of body fluids are Intracellular Fluid (ICF), which is found inside cells, and Extracellular Fluid (ECF), which is found outside cells.
Intracellular Fluid (ICF) accounts for 40-50% of body fluids, approximately 25 liters.
Blood plasma constitutes about 5% of body fluids, which is approximately 3 liters.
Interstitial fluid, also known as tissue fluid, is the fluid that occupies the space around cells and facilitates the exchange of nutrients and waste between blood plasma and cells.
Interstitial fluid allows for the passage of nutrients and oxygen from blood plasma to cells, and the removal of waste products and carbon dioxide from cells to the bloodstream.
Extracellular fluid (ECF) surrounds cells and is essential for transporting nutrients, waste, and signaling molecules between cells and the bloodstream.
Maintaining body fluid balance is crucial for homeostasis, as it affects blood pressure, nutrient transport, and waste removal.
Factors influencing the distribution of body fluids include age, sex, body composition, and overall health status.
Higher body fat percentage typically correlates with lower total body water content, as fat tissue contains less water than muscle tissue.
As people age, their body water content generally decreases due to a reduction in muscle mass and an increase in body fat.