Lung tissues
- Created by: Maddy
- Created on: 22-12-12 22:44
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- Lung Tissues
- Cartilage
- Supports trachea and bronchi
- Not a full ring to allow flexibility
- Smooth Muscle
- Constricts the airway when contracts
- Controls air flow if harmful substances
- Elastic Fibres
- when alveoli expand, elastic fibres stretch
- recoil when breathing out to force air out
- Help return lumen to original shape
- Goblet cells
- secrete mucus
- Mucus traps tiny particles to reduce risk of infection
- Ciliated Epithelium
- Consists of ciliated cells with tiny hair-like structures
- Move in unison to waft mucus up airway + down throat
- Stomach acidity kills bacteria
- Cartilage
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