This edition: The Cardiovascular System
Throughout our lives, we are continually consuming oxygen. Our bodies need oxygen to produce adenosine triphosphate (ATP), which provides the cell the ability to do work. We take in oxygen through our lungs, but it is the cardiovascular system that delivers that oxygen to all the cells in our bodies. Each day, the heart pumps about 7,500 liters of blood through a network of blood vessels. That network of blood vessels, along with the heart and the blood itself, combine to make up the cardiovascular system.
The cardiovascular system is responsible for the transport of nutrients, hormones, gases, and wastes to and from the cells in the body. It also plays a critical role in thermal regulation. Keeping the cardiovascular system functioning well is critical to maintain good health; the lifestyle choices that we make can have a huge impact on our cardiovascular condition.