Tuesday, September 28, 2010

Levels of organization of the body

Okay, so it all starts with chemicals.
Chemicals form molecules
Molecules make up cells
Groups of similar types of cells make tissues
Tissues come together to form organs
Organs that work close together make organ systems
Organ systems all work together to form an organism.
That's you: an organism that is a group of organ systems, made of organs, which are made of tissues, formed by cells, that are comprised of chemicals.

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