Unformatted text preview: -The smallest parts of the body are the atoms that make up the chemicals, or molecules, of the body. Molecules, in turn, make up microscopic parts called organelles that fit together to form each cell of the body. Groups of similar cells are called tissues, which combine with other tissues to form individual organs. Groups of organs that work together are called systems. All of the systems of the body together make up an individual organism. Knowledge of the different levels or organization will help you understand the basic concepts of human anatomy and physiology. -Chemical structures may be organized within larger units called cells to form various structures called organelles. -Dozens of different kinds or organelles have been identified. Examples include mitochondria, which are the powerhouse of the cell that provides the energy needed by the cell to carry on day-to-day functioning, growth, and repair....
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- Spring '12