Angiogenesis is the growth of blood vessels from the existing vasculature. It occurs throughout life in both health and disease, beginning in utero and continuing on through old age.

Why does angiogenesis happen?

Angiogenesis is the process by which new blood vessels form, allowing the delivery of oxygen and nutrients to the body's tissues. It is a vital function, required for growth and development as well as the healing of wounds.

What week does angiogenesis occur?

Increasing blood flow and pressure within the primitive vessels aid in stimulating further vessel development. The first half of gestation is characterized by branching angiogenesis, whereas from 26 weeks until full-term birth, angiogenesis within the placenta is predominantly nonbranching.