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.
The major functions of the respiratory system are: 1. -Gas exchange: the respiratory system allows oxygen in the air to enter the blood and carbon dioxide to leave the blood and enter the air. The cardiovascular system transports oxygen from the lungs to the cells of the body and carbon dioxide from the cells of the body to the lungs. 2. -Regulation of blood pH, which can be altered by changes in blood carbon dioxide levels. 3. -Voice production as air moves past the vocal cords to make sound and speech.