A Look Beneath the Skin

Name ______Investigating A Chicken Wing A Look Beneath The Skin Problem: What tissues allow a chicken wing to work?

Materials: Chicken Wing Paper Towels Dissecting Scissors Dissecting Tray Dissecting Needle Scalpel

Procedures: 1. Put protective gloves. Why?______

2. Obtain a chicken wing from your teacher.

3. The chicken wing has been cleaned under running water. Be sure that it is thoroughly dry. Use paper towels to make sure it is dry. Place the chicken wing in a dissecting tray.

4. Examine the skin covering the chicken wing. What type of tissue is skin tissue? ______

5. Remove the skin from the wing using the scissors. Hold up the skin as you cut so that you do not cut through the muscles located below the skin.

8. Notice the yellowish tissue found in small clumps on the inside of the skin. That is this tissue called? ______What type of tissue is it? ______

9. Observe the muscles on the chicken wing. The muscles are bundles of pale pink tissue that surround the bone. There are two groups of muscles in the lower arm. Hold down the arm at the elbow, and alternatively pull on each muscle groups. What happened? ______

11. Find the tendons – shiny white tissue at the ends of muscles. What do the tendons connect?______What type of connective tissue are tendons made up of? ______

12. Find a thin, white strand of material with the dissecting needle. Carefully pull the strand aside with the dissecting needle. This strand is a nerve.

13. Notice a thin reddish-brown strand of tissue. Pull it aside with the dissecting needle. This strand is a blood vessel. What tissues make up a blood vessel? ______

15. Carefully remove the muscles and tendons with your dissecting scissors and scalpel. Find the ligaments, the whitish tissue between the bones. What is the function of ligaments?______What type of connective tissue makes up the ligaments? ______

17. Before the chicken wings were washed off, they may have been bloody. What type of tissue if blood? ______

Clean-Up Instructions: a. Dispose of all chicken parts. b. Wash out the dissecting tray. Wash off all equipment. c. Wipe off lab top. d. Return all clean equipment to the correct storage area (on table.) e. Take off your gloves. Wash your hands with soap and water. Analysis and Conclusions: 1. Why are tendons important to a muscles ability to move a bone?

2. How does a chicken wing move at the elbow?

3. What type of joint is involved at the elbow?

4. What type of muscle did you observe in the chicken wing?

5. Which tissue of the chicken wing is commonly referred to as the meat?

6. How is the chicken wing you dissected similar to your arm? Be specific!