The Skeletal System

http://www.youtube.com/watch?v=vya4wpS2fgk

Introduction The skeletal system is not just made up of bones. It is made up of bones, cartilages, joints, ligaments, and other connective tissues.The skeletal system has 5 primary functions………

5 Functions1.Support2.Storage 3.Blood

Cell

Production

4.Protection 5.Leverage

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SupportThe skeletal system provides structural support for the entire body.Individual bones, or groups of bones provide a framework for the attachment of soft tissues and organs.

SupportYour bones are as strong as CONCRETE, but lighter.That is why your bones can support the weight of your body. Without the skeleton to pull against, muscles would not be able to make us sit, stand, run, or even walk.

Storage

Bones are a storage center for calcium salts. Calcium salts maintain normal concentrations of calcium and phosphate ions in body fluids.

StorageCalcium ions have a lot to

do with the CLOTTING PROCESS.

Bones also store lipids in yellow marrow.

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Blood Cell Produciton

Red blood cells, white blood cells, and other blood elements are produced in the RED MARROW of the bone.Red marrow fills the internal cavities of many bones.

Protection Soft tissues and organs are usually surrounded by bones or skeletal elements.Ribs protect the heart andlungs

Skull encloses the brainVertebrae shield the spinal cord

Pelvis protect important digestive and reproductive organs.

LeverageThe bones act as leversThese levers can change magnitude and direction of the forces generated by skeletal muscles. The resulting movements can be as simple as the motion of a fingertip to doing a backflip.