Difference between revisions of "Muscle"
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: The [[Muscle Cell|cells]] in the [[muscle]]s have a special part called 'muscle fibres' which can make the [[Cell (Biology)|cells]] shorter or longer. | : The [[Muscle Cell|cells]] in the [[muscle]]s have a special part called 'muscle fibres' which can make the [[Cell (Biology)|cells]] shorter or longer. | ||
: When a [[muscle]] gets shorter it has [[contract]]ed and when a muscle gets longer it has relaxed. | : When a [[muscle]] gets shorter it has [[contract]]ed and when a muscle gets longer it has relaxed. | ||
− | : Most [[muscle]]s come in [[antagonistic]] pairs. This means when one [[contract]]s the other must relax. | + | : Most [[muscle]]s come in [[Antagonistic Muscles|antagonistic]] pairs. This means when one [[contract]]s the other must relax. |
{| class="wikitable" | {| class="wikitable" |
Revision as of 11:08, 14 September 2018
Contents
Key Stage 1
Meaning
A muscle is a part of the body that makes us move.
Key Stage 2
Meaning
A muscle is a part of the body that can get shorter or longer to allow us to move about.
About Muscles
- In a human the muscles are attached to bones in the skeleton.
- Muscles can relax which means get longer or that can contract which means they get shorter.
- When we exercise it makes our muscles bigger and stronger.
Examples
The muscles in the human face. | The muscles in the arm. |
The muscles covering a cow skeleton. | The muscles under the skin of a sheep. |
Key Stage 3
Meaning
Muscles are organs in the muscular system which allow us to move.
About Muscles
- Muscles are made of muscle tissue.
- The cells in the muscles have a special part called 'muscle fibres' which can make the cells shorter or longer.
- When a muscle gets shorter it has contracted and when a muscle gets longer it has relaxed.
- Most muscles come in antagonistic pairs. This means when one contracts the other must relax.
When a muscle contracts it is called the 'agonist' and when it relaxes it is called the 'antagonist'. |