Anatomy & Physiology › Section D · The tissue level › Topic D.2
Epithelial tissue
Everything that enters your body, from oxygen to food to a drug, has to cross an epithelium first. These sheets of cells guard every surface, and their shapes and layers are matched precisely to whether a surface must protect, absorb, secrete or let things straight through.
In this topic
- What all epithelia share
- Holding the sheet together
- Naming an epithelium
- Simple epithelia
- Airway lining and stratified epithelia
- Worked example: thin barriers and diffusion
- Worked example: identifying an epithelium
- Glands
- How glands release their products
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…