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Skeletal System


Jobs of the Human Skeleton (Grades 4 to 6)


Jobs of the Human Skeleton (Grades 4 to 6)
Reading Level
     edHelper's suggested reading level:   grades 4 to 6
     Flesch-Kincaid grade level:   5.88

Vocabulary
     challenging words:    axial, calcium, framework, internal, pelvic, system, therefore, spinal, girdle, actually, spine, jobs, marrow, stimulate, pregnant, function


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Jobs of the Human Skeleton
By Jennifer Kenny
  

1     An adult's skeletal system is made of 206 bones. This bony framework weighs about 20 pounds.
 
2     Do you remember drawing stick people in your pictures when you were younger? Looking back, it may seem silly, but actually you were a little ahead of yourself if you think of your skeletal system. A stick figure shows our skeletal structure. The center is the skull and spine. Then two main girdles are attached to this axial skeleton. The arms are attached to the shoulder girdle. The legs are attached to the pelvic girdle. Of course, each bone is connected to another bone.
 
3     Your skeletal system has two main jobs – to support and to protect. It also has another function, which is not so obvious. That job is to act as a storehouse for calcium and phosphorus.

Paragraphs 4 to 8:
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