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Body Systems
The 12 Body Systems!
12
Anatomy
Undergraduate 1
04/12/2011

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Term
Lymphatic System/Immunity
Definition
Picks up fluid leaked from blood vessels and returns it to the blood. Disposes of debris in the lymphatic stream. Houses white blood cells involved in immunity. The immune response mounts the attack against foreign substances within the body.
Term
Respiratory System
Definition
Keeps blood constantly supplied with oxygen and removes carbon dioxide. The gaseous exchanges occur through the walls of the air sacs of the lungs.
Term
Digestive System
Definition
Breaks down food into absorbable units that enter the blood for distribution to body cells. Indigestible food-stuffs are eliminated as feces.
Term
Urinary System
Definition
Eliminates nitrogenous wastes from the body. Regulates water, electrolytes and acid-base balance of the blood.
Term
Male Reproductive System
Definition
Overall function is production of offspring. Testes produce sperm and male sex hormones, and male ducts and glads aid in delivery of sperm to the female reproductive system.
Term
Nervous System
Definition
As the fast-acting control system of the body, it responds to internal and external changes by activating appropriate muscles and glands.
Term
Endocrine System
Definition
Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use by body cells.
Term
Female Reproductive System
Definition
Ovaries produce eggs and female sex hormones. The remaining female structures serve as fertilization and development of the fetus. Mammary glands of female breasts produce milk to nourish the newborn.
Term
Skeletal System
Definition
Protects and supports body organs, and provides a framework the muscles use to cause movement. Blood cells are formed within bones. Bones store minerals.
Term
Muscular Systems
Definition
Allows manipulation of the environment, locomotion, and facial expression. Maintains posture, and produces heat.
Term
Integumentary System
Definition
Forms the external body covering, and protects deeper tissues from injury. Synthesizes Vitamin D, and houses cutaneous receptors and sweat and oil glands.
Term
Cardiovascular System
Definition
Blood vessels transport blood, which carries oxygen, carbon dioxide, nutrients, washes, etc. The heart pumps blood.
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