Epithelial and Muscle Twizz This is not enough! Study the notes!

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Presentation transcript:

Epithelial and Muscle Twizz This is not enough! Study the notes!

What is a tissue?

Group of similar cells performing a similar function Histology – microscopic study of tissues Structure determines function!!!

4 types of tissues?

Connective Epithelial Nervous Muscle

Common features of Epithelial

Fit tightly together (very little extra space) Free surface Basement Membrane Avascular Highly innervated

General Functions of Epithelial

Protection Barriers Diffusion Secretion Absorption

to protect

where diffusion is important where tissues are involved in secretion and absorption: larger cells because of the machinery of production, packaging, and energy requirements

“ciliated” literally = eyelashes (see next page)

Stratified: regenerate from below

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