The three types of circulation that make-up the circulatory system of the body are systemic circulation, pulmonary circulation and portal circulation, according to the Franklin Institute. The three systems work together ... More »

The pathway of blood circulation is broken into two different circulatory pathways, states the National Cancer Institute. The pulmonary circuit transports de-oxygenated blood from the right ventricle into the lungs to be... More »

A blood circulation flowchart depicts how the three independent systems, the cardiovascular, pulmonary and systemic, work together. The cardiovascular system consists of the heart, and the pulmonary system consists of th... More » Health Diagnostics & Imaging

The main function of the circulatory system is transporting blood, oxygen, hormones, nutrients and other important substances throughout the body. The circulatory system is actually two separate systems of circulation, p... More »

The dorsal blood vessel is part of the circulatory system of the earthworm that carries blood to the front of its body. It is a single structure that runs along the back of the worm's body. More »

Large animals need a circulatory system because the cells in the interior of their bodies are too distant from the surface for absorbed oxygen to diffuse to them sufficiently. By circulating fluid carrying oxygen to thes... More »

Blood circulation is regulated by the circulatory system, and blood is distributed throughout the body by the heart. It flows from the heart into arteries that branch into smaller veins and capillaries. More » Science Human Anatomy Blood