This module introduces Fick's principle in the context of understanding the cardiac output. It is intended for an introductory biology audience. This activity maps to the OpenStax biology textbook, 40.3 Mammalian Heart and Blood VesselsStudent Introduction: Vertebrate circulatory systems consist of blood, which transports materials to and from cells via blood vessels, and a heart to pump the blood. One important role of the circulatory system is to provide oxygen to cells. As a general rule, sma…