The immediate source of the intracellular fluid surrounding all human body cells is capillaries.
Interstitial fluid forms the immediate environment of all cells.
What are capillaries?
- Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them.
- They help to connect your arteries and veins in addition to facilitating the exchange of certain elements between your blood and tissues.
- Capillaries are delicate blood vessels that exist throughout your body.
- They transport blood, nutrients and oxygen to cells in your organs and body systems.
- Capillaries are the smallest blood vessels in your vascular system.
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