What is the name of the space in between the cells?

The interstitial space refers to the area between the cells within a tissue, where fluids and other substances can diffuse between the cells. This space is crucial for various physiological processes, including nutrient and waste exchange, as well as providing a medium for signaling molecules. Interstitial fluid, which fills this space, plays an essential role in maintaining homeostasis in the body by helping to transport nutrients, hormones, and waste products to and from cells.

In contrast, the intracellular space pertains to the area within the cells themselves, while the extracellular space is a broader term that includes all body fluids outside the cells, not only interstitial fluid but also blood plasma. The perivascular space specifically refers to the area surrounding blood vessels, which is a more localized area compared to the general interstitial space. Each of these spaces has distinct characteristics and functions, but when referring specifically to the area between cells, interstitial space is the accurate term.