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.
853 pages on this wiki. The Respiratory System is the group of organs responsible for carrying oxygen from the environment to the bloodstream and for expelling carbon dioxide. Its primary function is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body.