transcellular fluid

Due to the varying locations of transcellular fluid, the composition changes dramatically.

Transcellular fluid is the portion of total body water contained within epithelial lined spaces.

It is the main component of the extracellular fluid, which also includes plasma and transcellular fluid.

Transcellular fluid (a.k.a. "third space," normally ignored in calculations)

The extracellular fluid also includes the transcellular fluid; making up only about 2.5 percent of the ECF.

Some of the electrolytes present in the transcellular fluid are sodium ions, chloride ions, and bicarbonate ions.