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Major systems
Organ systems and functions
| Question | Answer |
|---|---|
| Forms external body covering and protects deeper tissues from injury. Synthesizes vitamin D and houses cutaneous receptors and sweat and oil glands. | Integumentary system |
| Protects and supports body organs and provides a framework the muscles use to cause movement | Skeletal system |
| Allows manipulation of the environment, locomotion, and facial expression. Produces heat. | Muscular system |
| Responds to internal and external changes by activating appropriate muscles and glands. Fast-acting control system of body. | Nervous system |
| Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use (metabolism) by body cells. | Endocrine system |
| Blood vessels transport blood, which carries oxygen, carbon dioxide, nutrients, wastes, etc. | Cardiovascular system |
| Picks up fluid leaked from blood vessels and returns it to blood. Disposes of debris in the lymphatic stream. | Lymphatic/Immunity system |
| Keeps blood constantly supplied with oxygen and removes carbon dioxide. | Respiratory system |
| Breaks down food into absorbable units that enter the blood for distribution to body cells. | Digestive system |
| Eliminates nitrogenous wastes from the body. Regulates water, electrolyte and acid-base balance of the blood. | Urinary system |
| Overall function is production of offspring. | Reproductive system |