The body is made up of three major extracellular materials. These materials are; body fluids, cell secretions and extracellular matrix.
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The three major subdivisions of extracellular fluid in the body are interstitial fluid, plasma, and transcellular fluid. Interstitial fluid surrounds cells, plasma is the fluid component of blood, and transcellular fluid is found in cavities such as cerebrospinal, synovial, and peritoneal fluids.
Extracellular fluid is found everywhere in the body except inside cells. It includes fluid found in blood vessels, tissues, and between cells.
Cells and intracellular components are not part of the extracellular fluid, as it is found outside of cells within the body. Intracellular fluid would not be considered part of the extracellular fluid.
cytoplasm
Most of the body's fluid is found inside cells (intracellular fluid) and in the space surrounding cells (extracellular fluid). The extracellular fluid includes the fluid within blood vessels (intravascular) and the fluid in between cells (interstitial fluid).
Extracellular fluid is the fluid found outside of cells in the body, which includes interstitial fluid (found in between cells) and plasma (found in the blood). It plays a crucial role in maintaining the balance of electrolytes and nutrients, as well as facilitating the exchange of substances between cells and their environment.