1. In terms of the differences between the opossum, bird, bat, and mole skeletons which you examined, which is most like the human (and therefore, most primitive or generalized)?

Human Anatomy & Physiology (11th Edition)
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**Analysis of Skeletal Differences: Opossum, Bird, Bat, and Mole**

1. In terms of the differences between the opossum, bird, bat, and mole skeletons which you examined, which is **most like** the human (and therefore, most primitive or generalized)?

2. Which is **least like** the human and, therefore, the most specialized?

3. Most anatomists consider bats more specialized than moles; but what important differences can you see between the mole's forelimbs and that of humans? Why is the front limb of the mole so specialized? Can you identify the humerus, clavicle, and scapula in the mole?

4. Compare the bat to the bird. Identify the humerus in each. Where is the bat's ulna? Are there any remnants of it? How is the bat's wing membrane supported by its skeleton? Be precise. Does a bird's wing work in the same way? Examine the bird's wing on the display table. What has happened to the bird's hand? How many metacarpals and digits ("fingers") does it have? You may need help from the labeled bird's skeleton on page 8-8. 

(Note: The referenced diagrams or labeled skeletons are not displayed on this page; refer to the mentioned page for visual aid.)
Transcribed Image Text:**Analysis of Skeletal Differences: Opossum, Bird, Bat, and Mole** 1. In terms of the differences between the opossum, bird, bat, and mole skeletons which you examined, which is **most like** the human (and therefore, most primitive or generalized)? 2. Which is **least like** the human and, therefore, the most specialized? 3. Most anatomists consider bats more specialized than moles; but what important differences can you see between the mole's forelimbs and that of humans? Why is the front limb of the mole so specialized? Can you identify the humerus, clavicle, and scapula in the mole? 4. Compare the bat to the bird. Identify the humerus in each. Where is the bat's ulna? Are there any remnants of it? How is the bat's wing membrane supported by its skeleton? Be precise. Does a bird's wing work in the same way? Examine the bird's wing on the display table. What has happened to the bird's hand? How many metacarpals and digits ("fingers") does it have? You may need help from the labeled bird's skeleton on page 8-8. (Note: The referenced diagrams or labeled skeletons are not displayed on this page; refer to the mentioned page for visual aid.)
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