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integumentary system
- forms external body covering
- protects deeper tissue from injury
- synthesizes vitamin D
- location of cutaneous (pain, pressure etc.) receptors
- location of sweat and oil glands
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skeletal system
- protects and supports body organs
- provides a framework the muscles use to cause movement
- blood cells are formed within the bones
- stores minerals
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muscular system
- allows manipulation of the environment, locomotion, and facial expression
- maintains posture
- produces heat
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nervious system
- fast-acting control system of the body
- responds to interal and external changes by activating appropriate muscles and glands
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endocrine system
glands secrete hormones that regulate processes such as growth, reproduction & nutrient use by body cells
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cardiovascular system
- blood vessels transport blood
- transports oxygen, CO2 , nutrients, wastes etc.
- heart pumps blood
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lymphatic system
- picks up fluid leaked from blood vessels and returns it to blood
- disposes of debris in the lymphatic stream
- houses whit blood cells involved in immunity
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respiratory system
- keeps blood constantly supplied with oxygen and removes CO2the gaseous exhanges occur through the walls of the air sacs of the lungs
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digestive system
- breaks down food into absorbable units that enter the blood for distribution to body cells
- indigestible foodstuffs are eliminated as feces
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urinary system
- eliminates nitrogen containing wastes from the body
- regulates water, electrolyte, and acid-base balance of the blood
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reproductive system
- produces offspring
- Testes produce sperm and testosterone; ducts and glands aid delivery of viable sperm to vagina
- Ovaries produce egges and estrogen; sites for fertilization and development of the fetus
- mammary glands produce milk to nourish newborn
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