Muscle: Difference between revisions
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= Skeletal muscle = | = Skeletal muscle = | ||
A skeletal muscle muscle consists of muscle fibres. One muscle fibre is approximatels 100 µm in diameter and consists of several nuclei and many mitochondria. Each muscle fibre contains myofibrils. These are approximately 1 µm in diameter.<br> | A skeletal muscle muscle consists of muscle fibres. One muscle fibre is approximatels 100 µm in diameter and consists of several [[Nucleus|nuclei]] and many [[Mitochondria|mitochondria]]. Each muscle fibre contains [[Myofibril|myofibrils]]. These are approximately 1 µm in diameter.<br> | ||
The myofibril is organised in repating units called sacromeres. These contain thick and thin filaments. Muscle contraction occurs when the thin filaments slide along the thick filament by hydrolysing ATP<ref>Berg J., Tymoczko J and Stryer L. (2001) Biochemistry, 5th edition, New York: WH Freeman.</ref>. | The [[Myofibril|myofibril]] is organised in repating units called [[Sacromeres|sacromeres]]. These contain thick and thin filaments. Muscle contraction occurs when the thin filaments slide along the thick filament by hydrolysing [[ATP|ATP]] <ref>Berg J., Tymoczko J and Stryer L. (2001) Biochemistry, 5th edition, New York: WH Freeman.</ref>. | ||
=== References === | === References === | ||
<references /> | <references /> | ||
Revision as of 22:05, 28 November 2010
Skeletal muscle
A skeletal muscle muscle consists of muscle fibres. One muscle fibre is approximatels 100 µm in diameter and consists of several nuclei and many mitochondria. Each muscle fibre contains myofibrils. These are approximately 1 µm in diameter.
The myofibril is organised in repating units called sacromeres. These contain thick and thin filaments. Muscle contraction occurs when the thin filaments slide along the thick filament by hydrolysing ATP [1].
References
- ↑ Berg J., Tymoczko J and Stryer L. (2001) Biochemistry, 5th edition, New York: WH Freeman.