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Most models use 2-liter soda pop bottles to model the lungs, I prefer the smaller, cheaper plastic cups in a classroom setting. Each breath begins with a contraction of the diaphragm, a dome-shaped sheet of muscle that lies just below the lungs. When you inhale, your diaphragm contracts, or flattens downward. This contraction creates a lower pressure in your chest cavity. Normal outside air pressure forces air through the nose and mouth, down the trachea and into the lungs. When you exhale, your diaphragm relaxes, increasing pressure on the lungs and forcing air out of the body. Materials: Flexible straws Clear plastic cups (7, 8 or 9 oz) Small balloons Large balloons Scissors Modeling clay Scotch tape Rubber bands Steps 1. Make a hole about the diameter of a straw in the bottom of the plastic cup with the scissors 2. Cut a 5 cm inflexible section of a straw 3. Make a small slit in the elbow of another straw 4. Insert the 5 cm piece of straw into the slit to form a "Y". Use some modeling clay and tape to make the joint airtight. 5. Tape the small balloons to each end of the diagonal segments of the "Y". Make sure these connections are airtight. 6. Thread the vertical (long) leg of the "Y" through the hole in the cup and seal with clay. 7. Cut the neck off the large balloon. Cover the open end of the cup with the rest of the balloon, use rubber band and tape to secure it. In this model, the cup is the chest cavity, the straws are the bronchi and trachea, the small balloons are the lungs, and the big balloon is the diaphragm. Manipulating the large balloon (pulling it out and pushing it in) will cause the small balloons to inflate and deflate, modeling breathing.

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15y ago
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14y ago

stem cells can be used to create functioning organs , such as lungs, hearts etc.

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Q: How do you make fake body organs such as lungs?
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