Notes on Body Flow - Body Flow Growth organized increase in...

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Body Flow Growth – organized increase in the size and number of cells and therefore an increase in size of the individual or a particular organ or part Respiration – exchange of respiratory gases (oxygen and carbon dioxide) between an organism and its environment Digestion – process by which complex food products are broken down into simpler substances that can be absorbed and used by individual body cells Absorption – movement of molecules, such as respiratory gases or digested nutrients through a membrane and into the body fluids for transport to cells for use Secretion – production and release of important substances, such as digestive juices and hormones, for diverse body functions Excretion – refers to the removal of waste products Circulation – movement of body fluids containing many substances from one body area to another in a continuous, circular route through hollow vessels. Reproduction – formation of new individual offspring
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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
  • DanielKusto
  • Anatomy

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