Anastomosis refers to the connection or joining of two structures, often used in the context of blood vessels or intestines. In the human body, it allows for alternative pathways for blood flow or the passage of digestive materials, ensuring that organs receive adequate nutrients and oxygen even if one pathway is blocked. In surgical procedures, anastomosis can be performed intentionally to reconnect sections of blood vessels or intestines after removal of a diseased part. This technique is crucial in various medical treatments, including bypass surgeries and organ transplants, helping to restore normal function and improve patient outcomes.