Final answer:
Extracellular fluid components include blood plasma and interstitial fluid. Muscle cytoplasm (sarcoplasm) is not considered a part of extracellular fluid as it is contained within cells.
Step-by-step explanation:
The components of extracellular fluid (ECF) include blood plasma and interstitial fluid, but not muscle cytoplasm (sarcoplasm). Blood plasma is the fluid component of blood that communicates with interstitial fluid via the capillary endothelium. Interstitial fluid, also known as tissue fluid or intercellular fluid, bathes and surrounds the cells of multicellular animals, providing nutrients and a means of waste removal. It is similar to plasma but exists outside the blood cells, filling the spaces between cells throughout the body.
The cytoplasm, on the other hand, refers to the contents within a cell's plasma membrane, and it does not belong to the extracellular fluid compartment. This includes the gel-like substance called cytosol, cell structures such as ribosomes, but importantly it is not part of the ECF.