Make Learning About the Human Body Fun for Kids February 22, 2018 09:27
The human body is a marvelous achievement of nature. This new book takes kids (and adults) into the secret world that makes us tick. It will teach you how muscles work, how food is digested, and much more.
Whether your kids are learning about history, math or science, making things fun is the best way to keep them interested. When it comes to the human body, children love things that are gross. Add some humor to the equation, and you have a recipe for a motivated learner!
Here are some cool facts from a new book, The Fantastic Body, that you can share with your kids.
Your skin has three layers. The outside layer is called the epidermis, which is actually made up of about 20 layers of tightly packed cells. The body sheds these cells constantly, even though you can't see it happening. More than half of the dust in your home is composed of dead skin cells that have fallen off your body. Keep that in mind the next time you see a dust bunny!
All mammals have hair. Some, like pandas, have a thick coat of beautiful fur. Others, like sea lions, just have whiskers. Because people are mammals, we also have hair, though not as much as our primate cousins—chimpanzees, gorillas, and orangutans. Many of the hairs on your body are so small you'd need a magnifying glass to see them.
Hair grows from hair follicles, which are tube-like structures in the skin. The average scalp contains 100,000 hairs. Scalp hair grows about 6 inches per year, however, the hairs don't grow at the same rate. At any point in time, 15 percent of hair follicles are in a resting state, which can last up to 3 months. When the resting follicles become active again, the old hairs are "pushed out." That's why the average person loses 50 to 100 hairs per day.
Your body is loaded with glands. Some produce tears. Some produce sweat. Some produce oil. Your mouth is home to six large glands and hundreds of tiny glands that make saliva.
Although you may think the purpose of saliva is to have spitting contests with your friends, it actually has more important things to do. It keeps your oral tissues moist, mixes with food to make it taste better and easier to swallow, and contains germ-fighting chemicals—antibodies—to help prevent tooth decay and other infections in your mouth.
Most people think the heart never rests because it has to pump 24 hours a day to keep you alive and healthy. Although your heart is a workhorse, it still needs to rest. But it does so in a tricky way. After the heart pumps blood into your arteries, it has to relax so it can fill up with blood for the next pumping cycle. Every time it fills with blood, the heart is resting. It only relaxes for a moment after each contraction, but that still counts!