20. Describe the key differences between Intramembranous and E 21. Why is it imp
ID: 3508761 • Letter: 2
Question
20. Describe the key differences between Intramembranous and E 21. Why is it important for long bones to have a growth plate? What function does the growth plate serve? walking children. 22. From a mechanical standpoint, why does the bichondylar angle of the femur form in 23. In general terms, what is Wolff's Law and why is it important? 24. From a mechanical loading standpoint, why is the periosteum important for developing straight long bone? 25. From a loading standpoint, why do long bones have abnormal cross-sectional profiles in certain areas 26. What would happen to the cross-sectional profile of an adult human long bone if that person were to be placed on long-term bed-rest? Sketch the new cross section.Explanation / Answer
20. Answer
Intramembranous ossification
Endochondral ossification
21. Answer
Growth plates are the areas of growing tissue near the ends of the long bones in the legs and arms in kids and adolescents. Also called a physis or epiphyseal plate, a growth plate produces new bone tissue.
22.Answer
Bichondial angle serves to place the knee and foot under the body’s center of gravity during single support phase of gait.
Hip joints are set lateral to the body’s midline, so this angle allows the lower limb to be aligned with the center of gravity.
23.Answer
The form of the bone given. The bone elements place or displace themselves in the functional forces and increase/decrease their mass to reflect the amount of functional forces.
This principle is important for preventing injuries.
24.Answer
Periosteum has collagen fibers which supports the long bone and to firmly connect to the surrounding structures. It serves as protection as well as a channel for the blood supply and nutrients for bone tissue.
Osteogenic cells in the periosteum play a vital role in the growth and repair of bony tissue.
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