Lung tissues

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  • 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


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