All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...

The agency OK’d an artificial vessel to restore blood flow in patients, even though its own scientists flagged questionable ...

Cardiovascular system - Edexcel The cardiovascular system is made up of three main parts - the heart, the blood vessels and the blood that flows through them. Respiratory system - Edexcel The ...