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Dem Bones

The human skull is composed of 30 different bones.
Human Skull
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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Comments

Shadeleaf

Shadeleaf wrote:

The Skull of Truth is what I think about when I hear "Skull" XD
commented: Sat Mar 01, 2014

When 2 worlds collide
spraines
commented: Wed May 01, 2013

jeniya1234

jeniya1234 wrote:

hey yall
commented: Tue Dec 13, 2011

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GaaraOfTheSand
GaaraOfTheSand posted in Friends:
I Feel like I should paste this here  Always remember this: Someone out there loves you. May be here online or on the other side of the world but they would care that you died. Now please put down that knife/blade or rope or gun or anything and think "do you want things to get better" or "do you want the chance of things getting better to be eliminated. Now let your scars fade and remember these words "I care"
reply about 1 hour
scarlet177
scarlet177 posted in Friends:
According 2 me..... a perfect friend should be..... kind towards all, loving, funny, helping, and some times silly ( a friend shounldn't be ALWAYS serious!) friendly ( of course ), and..................... AWESOME!!!! :D !! I do have friend with all these qualities..... her name is ******  and she has ALL these qualities!!!!!!!! so she is AWESOME, COOL AND A PERFECT FRIEND!! :D :)
reply about 14 hours
scarlet177
scarlet177 posted in Friends:
My BFF is awesome!!!!!!! I know that cuz, she is the only person whon can understand my feelings when my enemies or some other friends tease me badly or when those ppl be rude to me....... :(  . I can share all my secrets to her........ she is Awesome cuz, she is being herself . Her name is ****** ....... and she is my WORLD'S BEST FRIEND!!!!! :D
reply about 14 hours
Alexis7343
Alexis7343 posted in Friends:
I think its really great you posted this, cause a lot of people need it. Adults don't notice children problems. When I was in 2ed grade i was bullied by teens that were like 16. Not only that, teachers can bully kids too. My mom always puts people who try to kill them selves down in awful ways. Every time she says that stuff I am very offended by it cause she knows I have emotional problems but she still like to dig into it. Someone who feels they need to kill themselves needs someone to trust and talk to. I'm so happy you posted this. Cause it is so true!
reply about 24 hours
GaaraOfTheSand
GaaraOfTheSand posted in Friends:
I GONNA go draw
reply about 24 hours

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