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10 Cards in this Set
- Front
- Back
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Name and give examples of the three types of muscle. |
Cardiac Muscle - Involuntary and found in the heart Smooth Muscle - Involuntary and found in the digestive system Striated Muscle - Voluntary and known as the skeletal muscles
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Explain slow twitch muscle fibres and their relationship to energy systems. |
1. Known at Type I 2. Slow to contract 3. Long and thin in shape 4. Suited to aerobic / endurance |
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Explain fast twitch muscle fibres and their relationship to energy systems. |
1. Known as Type II 2. Fast to contract 3. Short and bulky 4. Suited to anaerobic / strength |
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Explain sliding filament theory |
1. Actin and Myosin filaments overlap and interact to form muscle fibres 2. The myosin fibres bind to the actin fibres with globular heads 3. Once attached, the head moves the actin filaments closer together to shorten the muscle |
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Explain a concentric muscle contraction. |
Occurs when the muscle contracts and shortens to overcome resistance. |
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Explain an isometric muscle contraction. |
Occurs when the muscle contracts to overcome resistance without any change to length. |
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Explain an eccentric muscle contraction. |
Occurs when the muscle contracts and lengthens to overcome resistance. |
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Give an advantage and disadvantage of isotonic contraction. |
Advantage - strengths muscle throughout the range of the movement Disadvantage - can cause muscle soreness |
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Give an advantage and disadvantage of an isometric muscle contraction. |
Advantage - can achieve maximal muscular contraction Disadvantage - strength gains are limited |
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Identify the basic structure of a skeletal muscle. |
1. Muscle 2. Connective tissue 3. Series of fascicles 4. Myofibrils 5. Sarcomeres 6. Myofilaments responsible for movement |
