Chicken Wing Dissection

In this picture, the skin is being removed so the muscles and bone can be seen.

 

 

Today in class, we were shown the dissection of chicken. The purpose of this lab is to display how our own skeleton works and to show the different tissues we have in our body. The teacher showed the how when the muscle called the flexor is pulled, the extensor, another muscle, can be pushed so the flexor relaxes when the extensor contracts. We were also shown bone marrow and explained the cells in the bone, which is a connective tissue. There were also other parts of the chicken wing we saw like cartilage and ligaments which connect bones to other bones at joints. We saw fat which keeps the animal warm but we couldn't find the nerve the the chicken wing. Coincidentally, we had some chicken for lunch that day, too.

Lab 10/12/11

Today in class, we did the Diffusion Lab, a lab activity observing how the cell plasma membrane in a cell works. We first make a corn starch mixture with a teaspoon of corn starch and a half a cup of water in a plastic baggie. Then, iodine was added to a beaker with water and the baggie was submerged into the mixture. What was suppose to happen didn't: iodine entering the baggie and tinting the corn starch purple. The starch turned a slight shade of purple on the bottom when more iodine was added, but overall, the lab didn't work as expected.