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QWhich of these statements is false regarding white fibers of muscle?

ID: #8685 Muscular System 138 views
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#8685Q ID
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Muscular SystemTopic
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  • A They contain a large number of sarcoplasmic reticula ✔ ✖
  • B They derive energy from aerobic processes ✔ ✖
  • C They are not rich in myoglobin ✔ ✖
  • D They contain fewer mitochondria than red fibers ✔ ✖
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Explanation

Muscles are composed of two types of fibers, red and white. While red fibers are rich in myoglobin and mitochondria and derive their energy from aerobic processes, white fibers contain fewer mitochondria and myoglobin and derive their energy from anaerobic processes. However, they are rich in sarcoplasmic reticulum, an organelle that plays a critical role in muscle contraction by releasing calcium ions. Thus, option B is false, as white fibers do not derive energy from aerobic processes.

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