Flashcards
Muscular-Skeletal systems
Cards in this deck (7)
- 1What are the two main types of striated muscle fibres?Fast-twitch and slow twitch; which are classified on the basis of speed and contraction.
- 2What are slow twitch fibres?Type l fibres are best suited for aerobic endurance type activities, long intensity-long duration as they have a slower contraction time.
- 3What are fast twitch fibres?Type ll fibres are suited to high intensity, short duration anaerobic exercise. There are two types of type ll muscle fibres:
-Type lla/ fast twitch oxidative glycolytic fibres are high intensity fibres which also possess endurance characteristics, suited for middle distance athletes or game players. (tennis player/ 1500m)
-Type llb/ fast twitch glycolytic fibres are suited for maximal intensity but short duration activities (100m sprint/shot-put) - 4What are the responses of the muscular-skeletal responses to exercise? (3)-fibre recruitment
-force production
-metabolism - 5What are the skeletal responses to exercise?Greater flexibility occurs at joints, increased heat production causes increased production of synovial fluid which reduces friction at joints.
- 6What are muscular adaptations to exercise?-dependant on the type of training, the muscle fibres will change.
-with strength training muscle fibres can increase size by 40-45%
-muscles develop a greater contractile force
-connective tissue around the muscle will also experience an increase in strength, in turn increasing stability of joints. - 7What are the skeletal adaptations to exercise?-increased stress on the bone encourages increased strength developing along the direction of the stress in the bone.
-greater bone density, as research suggests that the act of a muscle pulling upon a bone creates calcium deposits at the point of the stress.
-weight bearing activities encourage a strengthening and thickening of the hyaline cartilage (cushions the joint).
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- GCSE PE (Chapter 3 (effects of exercise-responses and adaptations)) Flashcards on Muscular-Skeletal systems, created by Camilla Donaldson on 13/12/2014.
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- Camilla Donaldson
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