What is the term for blood plasma found in the spaces between tissue cells?

The term for blood plasma found in the spaces between tissue cells is interstitial fluid. This fluid plays a crucial role in maintaining the balance of fluids in the body by providing a medium for the exchange of nutrients and waste products between blood and cells. Interstitial fluid is derived from blood plasma and fills the interstitial spaces, which are the areas between cells and tissues.

In contrast, cytoplasm refers to the material within a cell, excluding the nucleus, and is involved in various cellular processes. Serum is the clear, yellowish fluid that remains after blood has clotted, which does not contain clotting factors and is used in various laboratory tests. Hemolymph, on the other hand, is a fluid in invertebrates that serves both as blood and interstitial fluid, but it is not the correct term in the context of mammalian tissues.