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Respiratory system
Responsible for bringing oxygen into the body and removing carbon dioxide.
Circulatory system
Transports substances like oxygen and nutrients while removing wastes from tissues.
Blood vessels
Arteries carry blood away from the heart, capillaries allow substances to pass to tissues, and veins return blood to the heart.
Circulatory system diseases
Affect the heart and blood vessels, hindering blood flow.
Lymphatic system
Manages body fluid levels, drains leaked lymph back into the bloodstream through nodes.