Today in English GD class, Ms. Leung brought in a pair of pig's lungs. We all sat in our tables, waiting in wonder. Was there really a pig's lungs in the big, black, plastic lungs? When she finally took the lungs out, we found out. Dangling from Ms. Leung's hands, was a pair of real pig's lungs. We were then allowed to come up to the front of the classroom to watch. In the first demonstration, she used a big pump to fill and empty the lungs, so we could see how the lungs expanded. Then, she used a pair of sharp scissors to cut open the larynx and the trachea (windpipe).
Some of us groaned in disgust as the slimy surface was revealed. Ms. Leung let us touch the trachea, but only a few brave ones touched it. Next, she cut open the lungs. We saw the bronchioles (branch like tubes that sprout from the bronchi, which are the main tubes) and the tiny alveoli, or air sacs. It was tempting to touch the squishy, sponge-like organs, so I reached out to feel them. The outer layer felt cold and smooth, while the inside felt rough and spongy. I even stuck my pinkie inside one of the bronchioles!
This was a great experience, where we could learn more about the respiratory system, hands-on. I hope we can have more fun demonstrations like this!
Some of us groaned in disgust as the slimy surface was revealed. Ms. Leung let us touch the trachea, but only a few brave ones touched it. Next, she cut open the lungs. We saw the bronchioles (branch like tubes that sprout from the bronchi, which are the main tubes) and the tiny alveoli, or air sacs. It was tempting to touch the squishy, sponge-like organs, so I reached out to feel them. The outer layer felt cold and smooth, while the inside felt rough and spongy. I even stuck my pinkie inside one of the bronchioles!
This was a great experience, where we could learn more about the respiratory system, hands-on. I hope we can have more fun demonstrations like this!