$ 17.95 
SKU: 7372-21

Illustrates the muscles of the human body. Describes and shows the kinds of muscles and what is on the inside of muscles. Illustrates how many muscles it takes to smile (17) and how many to frown (43). Includes fun facts (Your have over 600 muscles in your body.) and answers to questions like, Why do muscles get tired? and Why do you shiver when you get cold?


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