THE MUSCLES
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THE MUSCLES
Muscles protect bones, articulations and other areas of our bodies.They are the body's principal source of warmth. They also allow us movement.
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INTRODUCTION
Movement is a property which all living-beings share.
The faculty they have to move is perfectly adapted to their needs of food and survival.
Animals need “engines” to move their bones and articulartions: the muscles.
MUSCLEs
Their functions: they protect our bones, articulations and other areas of our bodies.
Almost half of our total body-weight is made up of muscles.
Depending on their function, they have many shapes and sizes,
The cardiac muscle; the movement of the heart.
Voluntary and unvoluntary muscles.
Their main task: the movement of the body.
SKELETAL MUSCLES
We have more than 650 muscles.
Muscles in our face and in our hands.
Structure of the muscle fibres: skeletal muscle fibres. Actin. Myosin.
How muscles move.
Tendons.
Our muscular system is aided by our circulatory system and follows orders it receives through our nervous system.
Movement
Walking might appear to be a very simple movement to us, but it is really a succession of extremely complex movements.
If a muscle were not attached to anything, then it would be useless.
Agonistic and antagonistic muscles.
Almost all our movements include both conscious as well as unconscious elements.
In any reflex action, the sensorial impulses received are converted into motorised impulses.
At he age of thirty, a slow degeneration of the muscular system takes place.
Regular and moderate exercise.
SUMMARY |
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