Types of cells that make up skeletal muscles

Reference no: EM133441837

Assignment:

Slow-oxidative fibers and fast- glycolytic fibers are two types of cells that make up skeletal muscles- the type of muscle that allows you to move your body. Slow-oxidative fibers, which contain many mitochondria, contract slowly and tire out slowly, allowing for sustained postures or movements. Fast-glycolytic fibers, which contain very few mitochondria, contract rapidly to produce powerful, quick movements, but tire out rapidly as well. Most of the ATP produced in fast-glycolytic fibers comes from glycolysis.

(a) Suggest why these two types of skeletal muscle fibers have different amounts of mitochondria.

(b) It can be much faster to produce ATP by glycolysis than by oxidative phosphorylation. How would it benefit a sprinter to have high numbers of fast-glycolytic fibers?

Reference no: EM133441837

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