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A female asked:

hows does the cardiovascular system and the respiratory system work together to maintain homeostasis?

2 doctor answers2 doctors weighed in
Dr. Derrick Lonsdale
Preventive Medicine 73 years experience
Good question: Both these systems, like the rest of your body, are under the control of the lower part of the brain. Whether we like it or not, this is a computer. Control is exercised through the autonomic (automatic) nervous and endocrine systems. The organs send signals into the brain and the brain signals the organs. It is a two way street. The upper brain gives advice and consent to the lower brain, representing what we call self control.
Dr. Frederick Tibayan
Thoracic Surgery 23 years experience
Beautifully: Your body uses oxygen for fuel and produces carbon dioxide as waste. These gases circulate in the blood, which is pumped by the heart to the lungs (and the rest of the body). In the lungs, oxygen you breathe in enters the blood, while carbon dioxide leaves the blood and enters the air you breathe out.

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