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.
Describe the principal functions of the respiratory system. 1) Move air into and out of lungs (ventilation) 2) Allow diffusion of respiratory gases between air and blood (respiration) Explain the ultimate physiologic purpose for obtaining oxygen from the air.