TYPES OF SKELETAL MUSCLE FIBERS and TYPES OF MUSCLE CONTRACTION

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6 Terms

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Slow oxidative fibers

high myoglobin content, many blood capillaries, large mitochondria

2
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Fast oxidative-glycolytic fibers

Largest fibers high myoglobin and glycogen content

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Fast glycolytic fibers

low myoglobin content, high glycogen content Generate ATP by GLYCOLYSIS.

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GLYCOLYSIS.

Generate ATP by ____

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ISOTONIC CONTRACTIONS

  • Myofilaments are able to slide past each other during contractions 

  • The muscle shortens

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ISOMETRIC CONTRACTIONS

  • Tension in the muscle increases  

  • The muscle is unable to shorten