👉 In medical terms, a capillary is a type of blood vessel that carries oxygenated blood from the heart to the rest of the body. The blood vessels in our bodies are divided into two main types: arteries and veins. Arteries carry oxygen-rich blood away from the heart to various parts of the body, while veins take back oxygen-depleted blood back to the heart. Capillaries, on the other hand, are tiny blood vessels that allow for the exchange of gases between the blood