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Students observed the dissection of the heart and lungs of a sheep, and dissected a sheep heart, as part of the science unit on the circulatory/cardiovascular system. Ms. Salem conducted the dissection.
Have you ever seen the inside of a sheep? A couple of days ago my classmates and I dissected a heart. Mrs. Salem dissected a heart for us in our classroom because we are studying about the circulatory system.
When Mrs. Salem pulled out a sheep’s lungs and the heart from a plastic bag, it wasn’t like what I imagined. I imagined the heart and the lungs to be bigger. Between the two lungs were the heart and two tubes projecting from the lungs. Then she blew into one of the tube; it is called a trachea. The lungs then inflated like a balloon you blow into. I was amazed!! Mrs. Salem then separated the heart from the lungs with a knife. The heart was the size of a fist. I watched her as she cut open the heart. First I saw the aorta, then the Inferior Vena Cavae and the Superior Vena Cavae, and then all of the parts of the heart began to show. Inside the ventricles and the atrium were these little strings called cordetas. It was a mesmerizing sight.
When we dissected the heart ourselves, I was disgusted because I had to cut and touch the heart. When I put my fingers into the aorta I was disgusted by how it felt, it felt like slimy slugs. Fortunately, we wore gloves so it wasn’t that sickening. Once I got used to the feeling, I began touching and putting my fingers in the Superior Vena Cavae and Inferior Vena Cavae, wincing a little.
This was my first dissection and it was mesmerizing, amazing, and revolting all at once. I thought it was cool so I decided that I wanted to become a doctor because even though it was pretty disgusting it was cool and I like science.
Article posted March 28, 2011 at 04:22 AM •
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