What does each part of the setup represent in the resperitory system?
A. Bottle
B. Y-shaped tube connector
C. Balloons inside the bottle
D. Balloonso outside the bottle
E. Plastic tubing
Answers
Answer:
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Science, Tech, Math › Science
How To Make a Model of the Lungs
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Lung Model
Dave King/Dorling Kindersley/Getty Images
By Regina Bailey
Updated July 23, 2019
Constructing a lung model is an excellent way to learn about the respiratory system and how the lungs function. The lungs are respiratory organs that are vital to the breathing process and necessary to acquire life-giving oxygen. They provide a place for gas exchange between air from the outside environment and gases in the blood.
Gas exchange occurs at lung alveoli (tiny air sacs), as carbon dioxide is exchanged for oxygen. This oxygen is then delivered to the tissues and cells of the body by the circulatory system. Breathing is an involuntary process that is regulated by a region of the brain called the medulla oblongata.
Building your own lung model will help you to gain a better understanding of how the lungs work!
What You Need
Scissors
3 Large balloons
2 Rubber bands
Electrical tape
Plastic 2-liter bottle
Flexible plastic tubing - 8 inches
Y-shaped hose connector
Here's How
Gather together materials listed under the What You Need section above.
Fit the plastic tubing into one of the openings of the hose connector. Use the tape to make an airtight seal around the area where the tubing and the hose connector meet.
Place a balloon around each of the remaining 2 openings of the hose connector. Tightly wrap the rubber bands around the balloons where the balloons and hose connector meet. The seal should be airtight.
Measure two inches from the bottom of the 2-liter bottle and cut the bottom off.
Place the balloons and hose connector structure inside the bottle, threading the plastic tubing through the neck of the bottle.
Use the tape to seal the opening where the plastic tubing goes through the narrow opening of the bottle at the neck. The seal should be airtight.
Tie a knot at the end of the remaining balloon and cut the large part of the balloon in half horizontally.
Using the balloon half with the knot, stretch the open end over the bottom of the bottle.
Gently pull down on the balloon from the knot. This should cause air to flow into the balloons within your lung model.
Release the balloon with the knot and watch as the air is expelled from your lung model.
Tips
When cutting the bottom of the bottle, make sure to cut it as smoothly as possible.
When stretching the balloon over the bottom of the bottle, make sure it is not loose but fits tightly.
Process Explained
The purpose of assembling this lung model is to demonstrate what happens when we breathe. In this model, structures of the respiratory system are represented as follows:
plastic bottle = chest cavity
plastic tubing = trachea
Y-shaped connector = bronchi
balloons inside bottle = lungs
balloon covering the bottom of bottle = diaphragm
The chest cavity is the body chamber (bounded by the spine, rib cage, and breast bone) that provides a protective environment for the lungs. The trachea, or windpipe, is a tube the extends from the larynx (voice box) down into the chest cavity, where it splits into two smaller tubes called bronchi. The trachea and bronchi function to provide a pathway for air to enter into and exit the lungs. Within the lungs, the air is directed into tiny air sacs (alveoli) that serve as the sites of gas exchange between the blood and external air.