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You just finished learning that the levels of organization are:

cells --> tissues --> organs --> organ systems --> organism



Now let's compare the properties of higher levels of organization with the properties of the parts of the organism.

Organs such as the heart are made up of groups of tissue that work together to perform a specific function. The heart is a pump that keeps blood flowing throughout the body. The heart is primarily made up of muscle tissue but also contains connective and nerve tissue. However each of these individual types of tissues has its own primary function, which differs from the basic function of the heart.

Without the assistance of the cells in different organs, an entire organism is unable to stay alive. In a similar manner cells rely on different organs of the organism to do their jobs to keep these cells alive.



Choose another body organ. Research and explain to a friend, family member, or teacher how it contributes to its system as a whole.

Review science safety rules here.

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Teachers should view the Teacher Site Map to relate Sci-ber text and the USOE 7th grade science core.

Updated October 24, 2008 by: Glen Westbroek

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