👉 The term "circulatory" refers to a system of blood vessels that carries oxygenated and deoxygenated blood from one part of the body to another. This system is responsible for transporting nutrients, gases, hormones, and waste products throughout the body. In other words, circulatory systems are essential for life on Earth as they ensure that the body has access to the necessary substances needed for normal functioning, such as oxygen, glucose, amino acids, and electrolytes. Without a functioning circulatory
