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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. They're 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

Arenl
Arenl posted in Friends:
He is a jerk, but then what ?? He is your best friend . Maybe you should tell him to sleep for an extra hour. It may be a lack of sleep.
reply about 1 hour
KittyCheshire
KittyCheshire posted in Friends:
My BFFEL (best friend for eternal life) is being a jerk after we have been friends for a long time. What should I do?
reply about 1 hour
PittsburghPenguinsFanatic
"aftershock" wrote: "NicolletteA" wrote: no. and you sound like the marketing people that stop me at the mall.  :/ lol, I'm not, i just kno someone whos making a new app and wanted to see if any1 would use it.   BTW what do u say to the marketing people at the mall? No. I don't like those people at the mall. Sometimes, they ask my family and I (usually directed at my mom and sister, but sometimes at me, too. Even though I'm under 13. Not for long though.) if they want their hair done. And sometimes I'm so tempted to say, "No thank you. I did my hair today. Do you think I want it done?" But of course I never do. It's kinda disrespectful. So we just usually say No thank you. My mom, sister, and I now have a solution for that (my idea when I was maybe ages 9-11) Don't make eye contact with them and pretend that they aren't there.
reply about 14 hours
BookWorm86
This is GREAT advice! Thx a lot StephRox!:) I have a younger brother & he can be EXASPERATING at times lol! Great advice!!:D
reply about 15 hours
Arenl
Arenl posted in Family Issues:
My little brother is annoying as ever, but I have to handle him. He is my brother after all.
reply about 15 hours