Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.3
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1525
Points per Word
0.000328
Page Count
24
Points per Page
0.020833
Description
This introduction to the human muscular system explains what it is and how it works, looks at the parts of a muscle, and discusses healthy and unhealthy muscles.