The circulatory and respiratory system work together when exercising or resting. The respiratory system provides oxygen, which is needed by the body, to the blood via the alveoli in the lungs. This is then transported to the heart and carried around the body by the circulatory system.
When exercising the tissues need a lot more oxygen than when at rest. This also means the body is producing more carbon dioxide which needs to be removed. To ensure that this is being achieved there must be an increased respiration rate. As well as an increased respiration rate the heart must also increase so that the oxygenated blood can be pumped around the body more rapidly to meet the demand of the tissues.
When exercising the tissues need a lot more oxygen than when at rest. This also means the body is producing more carbon dioxide which needs to be removed. To ensure that this is being achieved there must be an increased respiration rate. As well as an increased respiration rate the heart must also increase so that the oxygenated blood can be pumped around the body more rapidly to meet the demand of the tissues.
