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Bone-case worksheet answer key
Course: Human Anatomy (BY 115)
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Students shared 90 documents in this course
University: University of Alabama at Birmingham
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Answer Key to Short Answer Questions for
“Look Out Below: A Case Study on Bone Tissue Structure and Repair”
1. Define the following terms, used in the case and also in associated questions:
a. hemorrhage
Hemorrhage: Bleeding or the abnormal flow of blood. Can be external
like in this case or internal
b. fracture
Fracture: break in the continuity of a bone’s structure
c. proximal
Proximal: a point of attachment of a limb closets to the trunk
d. diaphysis
Diaphysis: narrow elongated center portion of a long bone; the shaft
2. One way bones are classified is by their shape. How would you classify the bones
fractured by Mrs. Morgan?
Flat, long, short, and irregular are the classifications of bones based on their shape.
Mrs. Morgan’s humerus is a long bone, the occipital bone is flat, and vertebra is an
irregular bone.
3. The body of Mrs. Morgan’s vertebra is fractured. What type of bone tissue makes up
the majority of the vertebral body? Describe the structure and function of this type of
bone.
Most of the vertebral body is made up of spongy bone. The spongy bone is made up of
trabeculae (small beam) that have an open arrangement of osseous tissue, which helps
decrease the weight of bone. Additionally, spongy bone trabeculae align along stress
lines to prevent breakage.
4. The diaphysis of Mrs. Morgan’s humerus is fractured. What type of bone makes up
the majority of the diaphysis of long bones like the humerus? Describe the layers of
bone tissue found here.
The diaphysis of a long bone is made up almost entirely by compact bone. Compact
bone is made up of lamella (layers) that are named according to their shape or position
within compact bone.
• Concentric lamellae = circular shape; form the osteon
• Interstitial lamellae = located in between the osteons
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