P1 * Describe the Structure & Function of the Skeletal

P1 – Describe the Structure &
Function of the Skeletal System
Unit 1 – Principles of Anatomy &
Physiology in Sport
Bone Marrow
• Red Bone Marrow = produces new blood cells
• Yellow Bone Marrow = storage area for fat
Functions of the Skeletal System
• B lood Cell Production
• S hape / support
• P rotection
• A ttachment for muscles
• M ineral storage
• Blood Cell Production – bones are not solid, they
would be too heavy
• The centre of your bones has bone marrow in them
and this marrow is fed by blood vessels.
• The marrow of your long bones has a very
important function as they are continually creating
red and white blood cells.
• This function is essential as red blood vessels die all
the time and need to be replaced.
• Support – your skeleton provides the framework for
the soft tissue of your body and therefore also
provides the overall shape of your body.
• Protection – another very important factor of your
skeleton is protection. Your skeleton protects the
vital tissues and organs of the body.
Skull protects the brain
Thorax protects the heart and lungs
Vertebral column protects the spinal cord
Pelvis protects your reproductive and abdominal
• Attachment for Skeletal Muscle –
• Tendons, attach muscle to bone,
• allows the muscles to create leverage and this
leverage creates movement,
• the type of joint that the muscles are acting on that
determines the type of movement created.
• Mineral Store –
• bones act as a store for minerals such as calcium and
phosphorus that are essential for bone growth and
good health.
• The bones act as a reservoir for these minerals
which are released into the bloodstream as needed
to maintain a balance of minerals in our body.