======Lung Dissection======


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====Summary====                   
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====Procedure====  
  *Follow instructions provided in the links below.



====Links==== 
Lungs dissection - GCSE science - Alistair Rollinson: 
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Lung Dissection - Glasgow Science Centre: 
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📄 Dissecting lungs - Nuffield Foundation: [[https://practicalbiology.org/cells-to-systems/ventilation-systems/dissecting-lungs]]\\


====Variations====
  * Attach rubber tubing to the trachea and inflate the lungs using a hand or foot pump. Observe inflation and deflation inside a plastic bag to contain aerosols.  
  * If present, test the larynx by forcing air through it and listening for sounds.  
  * Compare lungs from different animals to study structural differences.



====Safety Precautions====
  * Use gloves, scalpels, and scissors carefully to avoid cuts.  
  * Wear eye protection when cutting cartilage or handling preserved specimens.  
  * Do not blow into the lungs directly; use tubing and a pump to avoid inhaling contaminated air.  
  * Place lungs in a plastic bag before inflating to contain aerosols.  
  * Wash hands thoroughly with soap and warm water after handling specimens.  
  * Disinfect benches, tools, and trays after use.  
  * Dispose of animal material appropriately (incineration or designated waste bins).




====Questions to Consider====
  * What features of the trachea help keep the airway open? (cartilage hoops prevent collapse but allow flexibility)  
  * How do arteries and veins differ in structure? (arteries have thicker, elastic walls; veins have thinner walls)  
  * Why does lung tissue float in water? (air remains trapped in the spongy alveolar structure)  
  * What does inflating the lungs show about their function during breathing? (lungs expand and recoil due to elasticity)  
  * How does the larynx produce sound? (air passing over vocal cords causes vibrations, producing noise)  
  * What are the ethical considerations of using animal lungs in the classroom?