Review Note
Last Update: 09/17/2024 03:20 AM
Current Deck: BCM BLOCK 1 YL1
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Front
Why might fast-twitch muscle fibers (Type IIb) fatigue faster during high-intensity exercise compared to slow-twitch fibers (Type I)?
a) Fast-twitch fibers rely primarily on oxidative phosphorylation, which produces energy slowly.
b) Fast-twitch fibers have fewer mitochondria and rely more on anaerobic metabolism, leading to faster accumulation of lactic acid.
c) Slow-twitch fibers accumulate more lactic acid, leading to earlier fatigue.
d) Fast-twitch fibers have more myoglobin, which depletes quickly, causing fatigue
Back
b) Fast-twitch fibers have fewer mitochondria and rely more on anaerobic metabolism, leading to faster accumulation of lactic acid.
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