The Muscular System
BY Olivia Collings
Chicken Wing Dissection
Identify the upper and lower wing, along with the wingtip.
1. What structures do these correspond to in humans? Upper arm (humerus), lower arm (radius + ulna), hand.
Identify the muscles in the upper wing. Try tugging on each of these.
2. What happens when you tug on these muscles? The wing will extend or bend depending on what muscle you pull.
3. What muscles do they correspond to in humans? The bicep and tricep
4. Which muscle is an extensor? To make the arm extend you must pull the chicken's equivalent of our tricep.
5. Which muscle is a flexor? To make the arm bend, you must pull the chicken's equivalent of our bicep
Identify the muscles in the lower wing. Try tugging on these
6. What happens when you tug on these muscles When pulling on these muscles the wingtip either bends or extends
Cut away some of the muscle tissue. Find the tissue that connects muscle to bone
7. What is this muscle called? Tendons
8. Describe what is looks like? A tough, white tissue, at the ends of muscles. Connecting them to the bones
Observe the elbow joint:
9. What is the tissue that connects the bones at this joint called? Ligaments
10. What kind of a joint is this? A hinge joint, forbidding the bones to pass 180 degrees
11. What kind of joint connects the wing at the shoulder? A ball-in-socket joint, allowing a full 360 degrees of movement
12. Describe the cartilage that lines the joint: A tough, white, smooth and slippery substance to cushion the joint and reduce impact. There was about 1/2 centimetre (5mm) around the bone.
Continue to cut away all of the muscle, to expose just the bones
13. Name the bones found in the chicken wing: Humerus, Radius and Ulna
Conclusion - How the muscular system links with the skeletal system
The skeletal and muscular systems work together to help us move, give structure and provide protection for our organs. Tendons attach the muslce to the bone and ligaments attach the bones to one another.