On the assigned day, each team should bring
- 2 paper or plastic plates
- 2 chicken wings (fresh, thawed)
- 1 hand soap
- 1 packet of dishwashing liquid
and answers to the Prelab
You will study the structure of the human arm and consider how this maybe similar to that of a chicken wing. During the lab, keep in mind that the structure of raw chicken may contain several different disease-causing species of Salmonella bacteria. To avoid infection, do not touch your eyes, nose, or mouth at any time while working with the chicken wing.
On a sheet of pad paper, draw and label the gross internal structure of the human arm with the following structures: muscles (biceps brachii, brachialis, brachioradialis, triceps brachii, flexor carpi, extensor carpi), bones (humerus, radius, ulna, carpals, metacarpals, phalanges), and associated tendons.
Refer to your drawing as you discuss the following points below:
- Which bone(s) is (are) found in the upper arm? Which bone(s) is (are) found in the lower arm?
- Muscles can only pull, they cannot push. Therefore most muscles work in pairs. Name the antagonistic pairs of muscles that a) causes the elbow to flex and extend, and b) causes the wrist to bend upward and downward.
- How do you think the structures in a chicken wing will be similar to those in the human arm? How do you think they will be different? Justify your answers.
Submit this before performing the dissection.