In multicellular
organisms cells of similar
structure and
function come together to create
tissues. Complex
organisms have many different cell types that fulfill different structural and physiological needs of the
organism. There are four basic
tissue types:
epithelial, connective, nervous and
muscle.
(A tutorial for this module is in production, but will not be ready for Winter 2011!) 
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1 - Anatomy and Physiology Basics