Epithelial and Muscle Twizz

This is not enough! Study the notes!

What is a tissue?

What is a tissue?

• Group of similar cells performing a similar function

• Histology – microscopic study of tissues • Structure determines function!!!

4 types of tissues?

4 types of tissues?

ConnectiveEpithelialNervousMuscle

Common features of Epithelial

Common features of Epithelial

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

General Functions of Epithelial

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