The circulatory and respiratory systems work together to provide cells with oxygen and nutrients and remove waste products such as carbon dioxide. When you need more oxygen, how does the circulatory system respond?
More blood is sent to the lungs and less to the rest of the body.
The blood vessels to the arms and legs constrict to conserve oxygen
Blood moves more slowly through the organs to carry away more wastes.
The heart beats faster to match the rise in breathing rate.
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