Even if you’re not Mr. Universe, you both have the same number of muscles in your body: about 600, many of which work incessantly to keep you moving and grooving.
Take an informative peek at these all-important strips of stretchy tissue; in Muscles, for kids, first up is a diagram showing the most important skeletal and smooth muscles – as well as your major cardiac one – that allow you to move, digest food, and also keep your heart pumping. The fine distinctions between voluntary and involuntary muscles are next, and kids can then trace a diagram showing the “anatomy” of action, which relies heavily on nerves.
Here’s a great activity to try: Contort your face into various expressions, like pain and surprise, and try to pinpoint the exact muscles of your face responsible for these subtle motions. Are you stumped? A (somewhat scary-looking) diagram peels back the skin on your face to display the complex arrangement of muscles that convey hundreds of emotions. More fun things to try: isometric and isotonic exercises, and simple tests that demonstrate the wildly different movements made possible with muscles. For kids who want to know what happens when your muscles don’t behave, descriptions of Parkinson’s disease and other muscle breakdowns are also featured, and the whole thing wraps up with an eye-opening discussion of animals and their unique muscular systems.
7 Topics in this unit
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How Skeletal Muscles Work
Whether you lift a book, turn your head, catch a baseball, or wink, every movement you mak ...
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The Body’s Major Muscles
If a Halloween skeleton is hanging from a string and you cut that string, the skeleton fal ...
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The Heart and Other Involuntary Muscles
You inhale about 25,000 times a day, and you swallow dozens of times in a single meal.
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Muscles Used in Facial Expressions
Think of the last time you smiled. Frowned. Cried. Winked. Blinked. Shouted. Chewed. Conce ...
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Exercise
While a skinny person and a bodybuilder may not look like they have much in common, in ter ...
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Muscle Problems
When your muscles perform the way you expect them to, you barely notice them.
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Animal Muscles
Humans are not the only living creatures with muscles.
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