Lung foldables instructions
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The respiratory system allows for oxygen to enter the blood and carbon dioxide to exit the blood through breathing. The organs involved include the nose, mouth, throat, windpipe, bronchi, and lungs. In the lungs, oxygen passes from tiny air sacs called alveoli into the blood in capillaries, while carbon dioxide passes from the blood into the alveoli. Breathing is powered by the contraction and relaxation of the diaphragm and ribcage muscles, pulling air into and pushing air out of the lungs with each breath.
Lung foldables instructions
- 1. Our bodies are constantly at work pulling air into the lungs, where oxygen is exchanged for carbon dioxide in the blood. This process is made possible by the organs of the respiratory system, which include the breathing structures of the head (nose, mouth, and sinuses), throat (throat and voice box), and chest (windpipe, bronchi, and lungs). The exchange of carbon dioxide for the oxygen needed to fuel cells takes place in the network of capillaries that surround tiny air sacs, called alveoli, in the lung tissue. The oxygen in the alveoli seeps into the blood flowing in the capillaries. Meanwhile, the carbon dioxide in the blood seeps into the alveoli, where it is exhaled from the body. The action of the ribcage and diaphragm work together to draw in and force out air in the chest cavity. During an inhalation, the diaphragm and the muscles betweenthe ribs contract. This pulls down the diaphragm, expands the chest, and draws air into the lungs. During an exhalation, all the muscles relax, shrinking the chest cavity and pushing the air out. A breath consists of an inhalation and an exhalation. 1. Color the page. 2. Cut out the four pieces along the solid black lines. 3. There are four solid black cut lines on the piece that pictures the boy: two short slots, a long straight one, and a curved one. Cut them all open. 4. Fold the tabs of the two rib pieces back along the dotted lines. 5. Slide the tab of rib piece A into the short slot on the left. 6. Repeat step 5 with rib piece B and the short slot on the right. Turn the model over and tape down both tabs, as shown. Turn the model back over and press the ribs down over the lungs. 7. Pinch together the BREATHE IN end of the long piece, as shown, and insert it into the straight slot. 8. Pull the long piece through the top slot from the back and feed it out through the curved slot. Smooth out the long piece