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Dem Bones

Dem Bones - Reviewed by Kidzworld on Dec 27, 2006
( Rating: 1 Star Rating)

You probably think of death when you think about skeletons. Maybe you think that skeletons are like scaffolding, holding everything in the body in place. The truth is bones are a lot more. Theyre alive.

You probably think of death when you think about skeletons. Or maybe you think that skeletons are like scaffolding, holding everything in the body in place, and the bones are like metal bars. True but bones are also very much alive. They aren't just some solid material like metal, they are alive with cells. Human bones have three layers. The smooth, hard outer layer is cortical bone. Beneath this layer are many layers of cancellous bone. Cancellous bone looks kinda like a sponge. Although not quite as hard as cortical bone, it's still pretty strong. The third and innermost layer is the bone marrow. Bone marrow is like a thick jelly, and its job is to produce blood cells. So, as you can see, bones aren't only alive, they're responsible for keeping you alive as much as the heart or the brain!

What Do Bones Do?

1Bones make blood cells.

1Bones are the framework for your body.

How Many Bones?

Humans are born with 300 bones, but adults only have 206 bones. So what gives? Some of the 300 original bones in a baby are made of regular bone and some are made of a material called cartilage. Cartilage is soft and flexible to start, but over the years the cartilage grows and slowly hardens into bone. Also, some bones fuse together. All of this is part of the normal growth process.

Some time between the ages of 17 and 21, this growth process ends and your bones are as big as they're going to get. And like magic, you end up with 94 fewer bones than you started with.

Bits of Bones

1More than half of the body's 206 bones are in the hands and feet.

1The skull is composed of 30 different bones.

1The smallest bone in the body is the stirrup bone inside the eardrum. It is less an inch long.

1The largest bone in the body is the femur which is the leg bone that runs from the hip to the top of the kneecap (patella.)

1Everyone's heard of the funny bone, but did you know that humerus is the real name of the long bone that runs from your elbow to your shoulder.

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Dear Dish-It In The Forums

Shadeleaf
... This happened to me.
reply about 21 hours
XxRuby_PhoenixxX
So yesterday, my dad checked my search history. Harmless, right? Well... you haven't seen it. Because they gave me a LONG lecture yesterday about what I read. I feel like they don't trust me on the internet anymore. But I also understand. Because you know what the history was? Phan  ѕмυт. LOTS of phan ѕмυт. How do I gain their trust? My mom won't let me use headphones and threatened to not let me go to VidCon. I'm not just angry and betrayed at my dad for snooping in my phone, but also embarrassed and ashamed. I'm only 10, for God's sake! They should be worried about my access to the internet. How do I gain their trust again?!
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Kirsteeeeen
Kirsteeeeen posted in Style:
This thread has been moved. Click here to see the new thread.
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raulcn
raulcn posted in Friends:
Funny, open-minded, a good secrets keeper, always by my side, serious when things get serious, energetic and I guess there would be more. But I don't need perfection in my friends, cause I'm not perfect either.
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RavenClawRaina
RavenClawRaina posted in Friends:
My perfect friend is someone who is easy to open up to. Someone I can trust to back me up in a fight. Someone with a sense of humor. Someone caring. Someone who is there for me 24/7. Someone amazingly fun to be around
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