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The Skeletal System

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Introduction

The Skeletal System provides us with many important functions, it provides us with the shape and form for our bodies as well as supporting, protecting, allowing our body to move freely, producing blood for the body, and storing minerals. The Skeletal System is the system of our body that gives our body its physical shape and with the help of the Muscular System it keeps us moving and makes us able to do tasks that we don't think about like raising our leg to kick a football or using our legs to boost us into the air to spoil the mark. The Skeletal System works directly with the help of the skeletal system which would explain why it is often referred to as the musculo-skeletal System. The average adult skeleton has 206 bones that are joined up with ligaments and tendons to make a protective and supportive framework for the muscles and the soft tissues which lie underneath it. The 206 bones form a rigid framework that the softer tissues and organs of the body are attached to, the vital organs are ...read more.

Middle

Muscles which cause movement of a joint are joined to two different bones and contract to pull them together. The Skeletal System is used in the game of Australian Rules Football all the time because we it is needed to run and stop quickly, we need to be able to stay on our feet when coming down from a marking contest or from punching the ball. The bones also keep everything in place and give us the ability to be able to take a hard hit to the stomach or a knee to the ribs and to be able to hold our arm firm to handball the ball. Football is played with 18 players on the ground at one time with a maximum of five players sitting on the bench for each team. The objective of the game is for the players to pass the ball around by hand and foot to kick a goal, the ball can be marked when it has traveled fifteen metres or more by foot and is marked with out it touching the ground by a player, this player then has time to go back and have his kick. ...read more.

Conclusion

Babies are born with 270 soft bones which is 64 more than an adult has but many of these bones will mould together by the age of twenty or twenty-five into 206 hard, permanent bones. The Red Spongy Marrow is the part of the bone that produces the red blood cells, the red blood cells are pumped around the heart and provide nutrients and oxygen to the rest of the body. 1. Long Bones (longer than they are wide): clavicle, humerus, radius, ulna, femur, tibia, fibula, metatarsals, metacarpals. Purpose: provides support and serves as the consistent set of levers and linkages that allow us to move (formed from hyaline/articular cartilage) 2. Short Bones: carpals and tarsals: consists mainly spongy bone covered with a thin layer of compact bone. Purpose: allows movement, provides elasticity, flexibility, & shock absorption. 3. Flat Bones: ribs, sternum and scapula. Purpose: protects and provides attachment sites for muscles. 4. Irregular Bones: skull, pelvis, and vertebrae. Purposes: support weight, distributes loads, protects the spinal cord, contributes to movement and provides sites for musclar attachment. 5. Sesamoid Bones: a short bone embedded within a tendon or joint capsule, i.e. patella. Purpose: alters the angle that the muscle if inserted into. ...read more.

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