👉 Hematogenesis is a biological process in which blood vessels form and develop into functional blood vessels. This process occurs during fetal development, when the blood vessels are formed and matured by the developing fetus's nervous system. In this process, the blood vessels begin forming as small tubes called capillaries that carry oxygenated blood to the body's tissues and organs. These capillaries eventually become larger vessels called arteries, which transport oxygen-rich blood away from the heart and into the rest of the body
