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 cells Functions of the Skeletal System B.S.P.A.M. • 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 organs • 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.