The latest research suggests your heart has a brain, and may be far more complex than imagined. This emotion, for example, boosts your heart attack risk five-fold, and your stroke risk three-fold.
The main function of the respiratory system is gaseous exchange. This refers to the process of Oxygen and Carbon Dioxide moving between the lungs and blood. Diffusion occurs when molecules move from an area of high concentration (of that molecule) to an area of low concentration.
Oxygen is carried to the cells by our cardiovascular system, which alsoreturns carbon dioxide to the lungs. Functions of the Respiratory System, p. 814 â¢ The respiratory system has 5 basic functions:1. Providing an extensive surface area for gas exchange between air andcirculating blood.2.