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11 organ systems

integumentary system forms the external body covering, and protects deeper tissues from injury. Synthesizes vitamin D, and houses cutaneous receptors (pain, pressure, ect) and sweat and oil glands
skelatal system protects and supports body organs and provides a framework the muscles use to cause movement. blood cells are formed within bones. bones store minerals
muscular system allows manipulation of the environment locomotion, and facial expression. maintains posture and produces heat
nervous system as the fact-acting control system of the body it responds to internal and external changes by activating appropriate muscles and glands
endocrine system glands secrete hormones that regulate processes such as growth, reproduction, and nutrient uses (metabolism) by the body cells
cardiovascular system blood vessels transport blood which carries oxygen, carbon dioxide, nutrients, wastes, ect. the heart pumps blood
lymphatic system/immunity picks up fluid leaked from blood vessels and returns it to blood. disposes of debris in the lymphatic stream. houses white blood cells (lymphocytes) involved in immunity. the immune response mounts the attack against foreign substances within the body
respiratory system keeps blood constantly supplied with oxygen and removes carbon dioxide. the gaseous exchanges occur through the walls of the air sacs of the lungs
digestive system breaks down food into absorable units that enter the blood for distribution to body cells. indigestible foodstuffs are eliminated as feces
urniary system eliminates nitrogenous wastes from the body. regulates water, electrolyte and acid-base balance of the blood
reproductive system produces sex cells, allows transfer of sex cells and fertilization to occur, permits development and birth of offspring, nourishes offspring, and produces sex hormones.
Created by: hhender2