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Sunday, October 23, 2011

Chicken Wing Dissection

In class, we watched our teacher perform a chicken wing dissection. This was to show how the human arm worked. As she was dissecting, the first type of tissue we saw was the skin tissue. The skin is a type of epithelial tissue. This tissue was whitish-yellow and was bumpy. The skin was attached to the muscle tissue. Then, our teacher showed us the muscle tissues. The muscle was pink and smooth. The muscle attached to the bone. Before our teacher reached the bone, she showed us other types of tissue. We saw fat and ligaments. The fat was white and smooth. It is used as a cushion. Next, we saw the ligaments. The ligaments were white. This used to help move the muscle tissue. The fats and ligaments are attached to the muscle tissue. When our teacher reached the bones, we saw the cartilage. This connects to the bones and is used to help the bone move around. Without cartilage, our bodies would be stiff as rocks. The cartilage was also white. In the chicken wing, there are also nerve tissues. However, in the chicken wing our teacher dissected, we were not able to see the nerve. If it was there, it would have been attached to the muscles.

This lab was done to show how a human's arm works. Almost everything is the same. The skin is the first tissue. Then comes the muscle. After that the fats ligaments are shown. Lastly, you will see the bones and cartilage. Additionally, the way a chicken's wing works is similar to the way a human's arm works. In both organisms, the skin is the first layer. It is always used to protect what is on the inside. The muscles move the same too. They both need the ligaments to help. The fat is used to cushion in both organisms. Lastly, the cartilage helps the bones move in both organisms. Although, there are two things that are different. The first one is that the muscle proportions are different in the organisms. The last one is that chickens don't have phalanges (finger bones).

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