How does the Cardiovascular System supply oxygen to the muscles during a continuous training session?
oxygen is breathed into the lungs where ‘gaseous exchange’ takes place, this transfers the oxygen to the blood supply (circulatory system) which already contains various substances ie. food etc. Oxygen is taken via the blood capilary network to the muscle cells ‘mitchocondria’ where ‘airobic resperation’ takes place, this involves the food being broken down using the oxygen, releasing energy to the cells and producing carbon dioxide and water as byproducts.
