Skeletal System Lab Purpose/Method: The skeleton is the main support structure of the body. In this lab, we will observe how bones can be so supportive by observing the structures of chicken legs. Materials: dissecting tools, Vocabulary: articulating cartilage spongy bone epiphysis red marrow periosteum fresh/ raw chicken legs compact bone diaphysis medullary cavity yellow marrow Procedure: The following steps will be very helpful practice for your next dissection!! 1.) Begin by making an incision in the skin of the chicken leg. Remove the skin. Observe any fat attached in the subcutaneous membrane. Discard the skin. 2.) Next, isolate each of the muscles. Do not remove them until you have traced and found where each individual muscle is attached to the bone. The fibrous tissues attaching the muscle to the bone are called tendons. Describe the texture of the tendons. Then, carefully cut the tendons and remove the muscles from the bone. 3.) Once your bone has been cleared, observe its external structure. Describe the structure as well as the texture. 4.) Make a longitudinal incision to divide the bone. Describe the internal structure and texture. 5.) Make a data table to include all of the vocabulary terms and a space for my signature. Identify each of the structures in your vocabulary list and raise your hand for a signature. Draw a diagram of your dissected bone and label all the structures you have observed. 6.) Observe a prepared slide of ground bone and sketch under high power. Be sure to include labels of all the structures you can identify. 9.) If there is a joint in your chicken leg, you should be able to find ligaments. Remove a section of a ligament and observe. 10.) Make a data table to record signatures as you identify bones on the models and skulls. The bones you will be responsible for have been pointed out in class. On some of the assigned pages, the bones are repeats, but you do not need to duplicate them in your data table. Conclusion: Describe how the microscopic and macroscopic structures of bone allow it to perform all of the functions that it has. Use your vocabulary, but make your sentences meaningful.