27. What would happen to the cross-sectional profile of an adult human long bone

Question

27. What would happen to the cross-sectional profile of an adult human long bone if that person were to move to an environment with 125% the gravity of earth? Sketch the new cross section. 28. Would you expect to see a difference in bone density between the dominant and non dominant arms of a professional baseball pitcher? Would you expect to see a difference in bone density between the dominant and non-dominate legs of the baseball pitcher? Why or why not? 29. Name three conditions needed for primary fracture healing to occur? 30. What are two conditions that could lead to a pseudoarthrosis? 31. What is the definition of bone quality? What is the clinical significance of this measure? (?) ^

Explanation / Answer

27,In increased gravity ,our bones and muscles would increase strength and density because more force is acting on them.so the bones become more strong.T here is also increase in the cross section diameter

28,The radiological examination revealed that there is an increase In density of bone substance ,diameter of bone and also length of dominant hand compared to non-dominant hand in a baseball player.

29,Proper nutrition,immobilisaton of the fracture and treatment of infections are needed for fracture healing

30,Pseudoarthrosis is due to Non union which is due to poor blood supply or ininfection.

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