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Friday, February 4, 2011

tissue


Definition
noun, plural: tissues
An aggregate of cells in an organism that have similar structure and function.

Supplement
The fundamental types of tissues in animals are epithelialnerveconnectivemuscle, and vascular tissues whereas in plants, they are the meristematic (apical meristem and cambium), protective (epidermis andcork), fundamental (parenchymacollenchyma and sclerenchyma) and vascular (xylem and phloem) tissues. Tissues that work in unison to carry out a specific set of functions form an organ.

Word origin: Middle English tissu, a rich kind of cloth, from Old French, from past participle of tistre, to weave, from Latin texere.

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