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Body System

Organization of the Body

circulatory system (heart, blood, and blood vessels such as arteries, veins, and capillaries)transports blood.
lymphatic system lymph vessels and nodes that carry a clear fluid called lymph that contains white blood celled called lymphocytes that fight against disease and play an important role in immunity.
digestive system brings food into the body and breaks it down so that it can enter the bloodstream. Food that cannot be broken down is then removed from the body at the end of the system.
endocrine system composed of glands, sends chemical messengers called hormones into the blood to act on other glands and organs.
female and male reproductive systems produce the cells that join to form the embryo.
nervous system carries electrical message to and from the brain and spinal cord.
respiratory system controls breathing, a process in which air enters and leaves the body.
skin and sense organ system including the skin and eyes and ears, receives messages from the environment and sends them to the brain.
urinary system produces urine and sends it out of the body through the kidneys, ureters, bladder, and urethra.