The respiratory and cardiovascular system work very closley in order to fulfil the demand of muscle.
When the both systems work togetehr they are called the cardio-respiratory system,which together provides oxygen for the muscle and remove carbon dioxide from the body.
During exercise when muscle require more oxygen for contraction and relaxation, cardio-respiratory systems produces more carbon dioxde as a waste product.
Cariovascular sytem helps to transport the oxygen taken by respiratory system and work together for proper functining of muscle.
