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Cards In This Set
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The body is highly organized. 1)The simplest level of organization is
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Chemical level
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All matter is composed of
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Chemical elements, iron,calcium or oxygen.
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About 98 percent of the body is composed 6 elements, what are they
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Oxygen,carbon,hydrogen,
nitrogen,calcium, and phosphorus.
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Is the smallest amount of a chemical element that has the characteristic properties of that element.
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Atom
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Atoms can combine chemically, forming
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Molecules
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2) Level of organization
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Cellular level
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The human body is composed of how many cells
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100 trillion cells of many types,
bone cells, blood cells, and muscle cells
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Cells vary in size and shape according to
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Their function
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Each cell consist of specialized cell parts called
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Organelles
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In one organelle, the nucleus serves as
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the information and control center of the cell.
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Several organelles scattered throughout the cell performing specific functions, such as
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Manufactoring needed substances or breaking down fuel molecules to provide energy.
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3)The next hightest level of organization above the cellular level is
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The Tissue level
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A group of closely associated cells specialized to perform particular functions, is a
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Tissue
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The four main types of tissue in the body are
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1)Muscle tissue,2)nervous tissue,3)connective, and 4)epithelial tissue.
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Tissues are organized into
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Organs
, such as the brain,stomach, or heart.
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