By Andrew,
Intro
The purpose of the Circulatory System is very simple. It is one of the many systems inside your body that keeps you alive. The Circulatory system circulates nutrients, gases, and wastes. The Circulatory system has many parts that keep it running. 17 parts to be exact. Without these parts the Circulatory system would not be able to run. The main parts are the Heart, the Arteries, and the veins. There are three types of circulation throughout the Circulatory System. Cornary, Systemic, and Pulmonary circulation.