Bones and Muscles

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Bones and Muscles

• First grade
• Miss Marichel Robinson
• Science teacher

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The skeleton
The skeleton is a rigid framework of bones, which
provides an anchor for the muscles, supports the
skin and other organs, ans protects vital organs.
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Bones
A babys skeleton has 300 bones or more, but some
of these fuse (join) together as the baby grows
older.
An adult skeleton has 206 bones joined together
by rubbery cartilage.
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Five important bones or collection of bones to
learn
skull
rib cage
spine
pelvis
femur
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The skull
The skull is a hard bone that protects the brain.
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The rib cage
heart
The rib cage are thin, flattish bones that curve
around your chest. The rib cage protects vital
organs such as heart and lungs.
lungs
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The Spine
The spine, also known as the vertebral column or
spinal column, is a column of 26 bones in an
adult body .
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The Pelvis
The Pelvis is a bony structure near the base of
the spine to which the legs are attached.
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The femur
The femur is the biggest and longest bone in our
body. They are located in our legs.
femur
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Our Muscles
Muscles help us move. Some muscles move on their
our. 1. The brain sends messages to the muscle
to let it know its time for work. 2. Muscles
contract 3. Pulls bones attached to them.
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The muscular system is important to me, because
it allows me to do many things. It allows me to
play volleyball, soccer, basketball, or any
sport. It allows me to walk and run. Without the
muscular system I wouldnt be able to the many
things I enjoy. You wouldnt be able to walk up
and play with your friends.
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Lets always keep our bones and muscles healthy
eating fish, drinking milk and walking under the
sunlight!
The end!