Skeletal System Extra Credit

1
Skeletal System Extra Credit

• Due 10 days after the return of the Skeletal Unit
  Test

2
Case Study

• There is a volunteer neighborhood cleanup day in
  your community. A young boy who is helping out
  by dragging a heavy bag of litter all of a sudden
  lets out a loud cry of pain.

3

• You are thinking that maybe the boy pulled a
  muscle. To your surprise, you notice that his
  hand is dangling as if he broke his forearm.

4

• You rush the child to his parents, and he his
  hurried off to the hospital. Later that day, you
  see the boys father and he tells you how the boy
  is doing. He laments that his son should really
  be more careful about his activities

5

• His son has broken both is legs twice, as well as
  that same arm, on the padded school playground.
  He then explains that it takes a long time for
  the boys bones to heal.

6

• The father mentions that two years ago the boy
  lost his hearing in one ear after getting too
  close to an exploding fire cracker. The father
  ends the story saying, Otherwise, he is your
  typical kid. He hardly has a sick day off from
  school and he is growing like a weed.

7
Directions

• Do not start googling like a madperson!
• Use your knowledge of bones and growing to figure
  out what is going on here.
• Why is this boy so accident-prone?
• How is it that his bones break so easily?
• How might his hearing loss be related to bones?
• Email me your answers! You will earn points
  based on the rationale of your hypothesis, you
  dont have to get an exact diagnosis!