<img src="/media/content_files/1/interstitial_fluid.jpg" alt="interstitial_fluid.jpg" width="400" height="300" style="border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 0.375rem; margin-bottom: 0.5rem;" /> From [quora.com](https://www.quora.com/How-does-blood-go-from-arteries-to-every-cell-in-the-body-and-then-back-into-veins-without-any-leaks) Interstitial fluid is a type of body fluid that fills the spaces between blood vessels and cells. It contains nutrients that have been diffused from the capillaries, as well as waste products that are released by cells during metabolism.