Sliding Filament Theory
- Created by: Kaylie2111
- Created on: 19-01-23 14:20
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- Sliding Filament Theory
- Skeletal Muscles - voluntary control
- Extensibility, elasticity, excitability, and contractility
- Multinucleated and striations
- Inside muscle fibres are multiple myofibrils
- Each myofibril has sections that repeat called sarcomeres
- The arrangement of the sarcomeres contribute to the skeletal muscles striated look
- Sarcomeres has proteins called actin and myosin
- Thin: Actin Thick: Myosin
- z lines: actin attaches
- M-line: myosin attches
- Sarcomeres must shorten to contract but filaments do not contract
- This means the filaments must slide over each other
- Actin must slide over the myosin towards the centre to contract
- Myosin has heads which are bound to ATP
- ATP hydrolyzes into ADP and phosphate which binds to actin
- Myosin has heads which are bound to ATP
- Actin must slide over the myosin towards the centre to contract
- This means the filaments must slide over each other
- Sarcomeres must shorten to contract but filaments do not contract
- M-line: myosin attches
- Each myofibril has sections that repeat called sarcomeres
- Inside muscle fibres are multiple myofibrils
- Multinucleated and striations
- Extensibility, elasticity, excitability, and contractility
- Skeletal Muscles - voluntary control
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