Bones and Skeletons

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Bones And Skeletons
By Ms. Mini Abraham
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What would happen if a human being didn't have a
skeleton?
You'd be floppy like a beanbag.
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Without a skeleton
Could you stand up?
Could you walk?
No way.
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Without a skeleton your body would be
like an earthworm or a jellyfish.
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Inside your body you have a skeleton made of
bones.
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Some animals like crab, have a skeleton on the
outside of their body.
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As a crab grows too big for its shell, it has to
shed its old shell and grow a new one.
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Are skeletons important ???
YES
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Why is it important ?
It protects the delicate parts of our body.
Our skull protects our brain.
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Our ribs form a cage that protects our heart and
lungs.
Lungs
Rib cage
Heart
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Inside our backbone is our spinal cord.
Backbone
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brain
Our brain sends messages down the spinal cord to
all parts of our body.
backbone
spinal cord
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There are 206 bones in the human skeleton.
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Longest bone - Thigh bone ( femur )
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Smallest bone - Tiny bone inside the ear (
Stirrup )
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Not all bones are soild.
The long bones are filled with a jelly- like
substance called marrow which helps to make
blood.
bone marrow
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Living bone
Bone can be strong as some kinds of steel.
It is a living, growing substance, which is why
a broken bone can grow and mend again.
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How a broken bone mends?
ends of broken bone
clotted blood
bony swelling around the broken ends
two ends have joined
slight swelling around the broken ends
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skull
1
jaw bone
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shoulder blade
2
10
collar bone
3
breast bone
rib
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spine or backbone
upper arm bone
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5
lower arm bones
13
pelvis
6
thigh bone ( femur )
hand bones and finger bones
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knee cap ( patella )
7
15
lower leg bones
foot bones and toe bones
Label me !!!
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Thank you
Thank you
Thank you
Thank you
Thank you