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Skeletal System


Tendons, Ligaments, and Joints (Grades 4 to 6)


Tendons, Ligaments, and Joints (Grades 4 to 6)
Reading Level
     edHelper's suggested reading level:   grades 4 to 6
     Flesch-Kincaid grade level:   5.69

Vocabulary
     challenging words:    calcium, connective, therefore, spinal, probably, rubbery, substance, actually, cartilage, spine, bands, adult, stable, freedom, allow, column


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Tendons, Ligaments, and Joints
By Jennifer Kenny
  

1     You probably know that an adult has 206 bones in his body. Bones are stiff and hard. They are held together by connective tissue. Our bodies move because of joints.
 
2     There are three main types of connective tissue in our skeletal system. They are cartilage, tendons, and ligaments. Collagen, the protein that strengthens bones, is also found in connective tissue. Therefore, collagen strengthens connective tissue as it does bones. However, these connective tissues do NOT contain calcium salts. What difference does that make? Well, connective tissues are, therefore, not hard like bone.
 
3     Tendons connect muscles to bones. They act like tough cords. Tendons allow the muscles to pull on bones. If you look at the back of your hand and move your fingers, the bands you see moving from your fingers to your wrist are actually tendons.

Paragraphs 4 to 6:
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