Flashcards in DMD - L1 Deck (12)
Types of muscle fibre
Describe the structure of muscle
Describe the structure of sarcomeres
Explain the sliding filament theory
Explain the cross-bridge cycle
What is dystrophin?
Where can ATP be obtained from?
within the fibre
glucose in the cell (as glycogen)
glucose & fatty acids from blood
Describe aerobic and anaerobic respiration
Describe the energy source graph
Type I muscle fibres?
red fibres, slow oxidative, slow twitch, fatigue resistant
large amount of myoglobin, many mitochondria
many blood capillaries
generate A TP aerobically (oxidative)
split ATP at a slow rate
slow contraction velocity, resistant to fatigue
found in large numbers in postural muscles
needed for aerobic activities like long distance running
Type IIA muscle fibres?
red fibres, fast oxidative, fast twitch, fatigue resistant
large amount of myoglobin, many mitochondria, many capillaries
high capacity for generating ATP by oxidation. Split ATP at a very rapid rate, hence, high contraction velocity o resistant to fatigue but not as much as slow oxidative fibres
needed for middle distance running and swimming