AP BIOLOGY

Detailed explanation-1: -Angiogenesis is stimulated when tumor tissues require nutrients and oxygen. Angiogenesis is regulated by both activator and inhibitor molecules.

Detailed explanation-2: -Tumor angiogenesis is the proliferation of a network of blood vessels that penetrates into cancerous growths, supplying nutrients and oxygen and removing waste products. The process of angiogenesis plays an important role in many physiological and pathological conditions.

Detailed explanation-3: -Like all cells, cancer cells require a constant supply of nutrients and oxygen in order to grow and divide. Without an adequate blood supply tumors will not grow. Tumors produce factors that stimulate the formation of blood vessels to provide them with the food and oxygen they need.

Detailed explanation-4: -Angiogenesis is how the body forms new blood vessels. This is a normal part of growth and healing. But sometimes angiogenesis can play a role in diseases such as cancer. To grow, a tumor needs nutrients and oxygen from your blood.

Detailed explanation-5: -Like healthy cells, cancer cells can’t live without oxygen and nutrients. So they send out signals called angiogenic factors. These encourage new blood vessels to grow into the tumour. This is called angiogenesis.