The circulatory system consists of the heart, blood vessels (arteries, veins, and capillaries), and blood. Its primary function is to pump oxygenated blood from the heart to the body tissues and return deoxygenated blood back to the heart, ensuring that all cells receive vital nutrients and oxygen while also removing waste products like carbon dioxide.
The respiratory system includes the lungs, trachea, bronchi, and diaphragm. This system is responsible for the intake of oxygen and the expulsion of carbon dioxide; the diaphragm contracts to allow air into the lungs, where oxygen diffuses into the bloodstream to be transported by the circulatory system, highlighting the interdependence of these two systems to maintain homeostasis and support cellular functions.
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