unit 3 A2 - Epithelial tissues

  • Created by: san01
  • Created on: 15-10-19 13:57

definition of simple squamos?

- Single layer of flat cells packed together. 

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functions of simple squamos?

- Play a role in osmosis, diffusion, and filtraion. 

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examples of simple squamos?

alveoli in lungs, capilarries, kidneys 

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definition of simple cuboidal?

- one layer thick, cells are shaped like cubes. 

- found in organs specialised for secretion. 

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examples of simple cuboidal?

- salivary glands, thyroid follicess, kidneys. 

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definition of simple columnar?

- single layer of long epethilial cells. 

-found where absorbtion and secretion is important

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examples of simple columnar?

- digestive tract

-oesophagus

-intestines

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definition of stratified cuboidal?

- has several layers 

- main fucntion is abosrbtion, secretion and exrection 

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examples of stratified cuboidal?

- salivary glands 

- sweat glands 

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definition of stratified squamos?

- cells are flattened, tight together and stacked for protection

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examples of stratified squamos?

- skin

-respiratory, digestive, reproductive systems 

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definition of stratified columnar?

responsible for protection and mucos secretion 

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examples of stratified columnar?

- inside eyelids 

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which epithelial structures have one layer?

simple squamos, simple cuboidal, simple columnar 

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which epithelial tissues have more layers?

stratified squamos, stratified cuboidal. stratified columnar.

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what is the function of epithelial cells?

They are thin tissues that cover all exposed surfaces of the body for protection. With selective absorbtion.For example skin which absorbs vitamin d 

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