TBW is distributed among what 3 compartments?

TBW is distributed among what 3 compartments?

• A. Intracellular, Extracellular, Transcellular
• B. Plasma, Interstitial, Lymph
• C. Intracellular, Plasma, Blood
• D. Intercellular, Transcellular, Plasma

Answer: (A)

Total body water is fluid both inside and outside cells, with a separate, smaller pool that is fluid in specialized compartments. The inside-the-cell fluid (intracellular) makes up the largest share. Outside the cells is extracellular fluid, which includes interstitial fluid and plasma, and a distinct, smaller pool called transcellular fluid that occupies spaces like cerebrospinal, synovial, pleural, peritoneal cavities, and other secretions. Because transcellular fluid is regulated differently and can shift in disease, it’s treated as its own compartment alongside intracellular and extracellular. So TBW is distributed among three compartments: intracellular, extracellular, and transcellular.

Total body water is fluid both inside and outside cells, with a separate, smaller pool that is fluid in specialized compartments. The inside-the-cell fluid (intracellular) makes up the largest share. Outside the cells is extracellular fluid, which includes interstitial fluid and plasma, and a distinct, smaller pool called transcellular fluid that occupies spaces like cerebrospinal, synovial, pleural, peritoneal cavities, and other secretions. Because transcellular fluid is regulated differently and can shift in disease, it’s treated as its own compartment alongside intracellular and extracellular. So TBW is distributed among three compartments: intracellular, extracellular, and transcellular.