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Levels of structural organization and organ systems.

QuestionAnswer
Chemical Level Atoms combine to form molecules.
Cellular Level Cells are made up of molecules.
Tissue Level Tissues consist of similar types of cells.
Organ Level Organs are made up of different types of tissue.
Organ System Level Organs consist of different organs that work closely together.
Organism Level The human organism is made up of many organ systems.
Skeletal 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 fast-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 use (metabolism) by body cells.
Cardiovascular System blood vessels transport blood, which carries oxygen, carbon dioxide, nutrients, waste, etc. *The heart pumps the blood*
Lymphatic System/Immunity The tissues and organs, including the bone marrow, spleen, thymus, and lymph nodes, that produce and store cells that fight infection and disease.
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 absorbable units that enter the blood for distribution to body cells. Indigestible foodstuffs are eliminated as feces.
Urinary System Eliminates nitrogenous wastes from the body. Regulates water, electrolyte and acid-base balance of the blood.
Reproductive System System of organs involved in producing offspring.
Created by: 1638729209756484
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