Energy Requirements of Skeletal Muscles

Skeletal muscles generate ATP through aerobic and anaerobic respiration and through the use of phosphate groups donated by creatine phosphate.The aerobic and anaerobic abilities of skeletal muscle fibers differ according to muscle fiber type, which are described according to their speed of contraction, color,and major mode of energy metabolism.

Skeletal muscles at rest obtain most of their energy from the aerobic respiration of fatty acids. During exercise, muscle glycogen and blood glucose are also used as energy sources (fig. 12.21). Energy obtained by cell respiration is used to make ATP, which serves as the immediate source of energy for (1) the movement of the cross bridges for muscle contraction and (2) the pumping of Ca2+ into the sarcoplasmic reticulum for muscle relaxation.

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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  • Terry
    What is sources of energy of skeletal muscle?
    8 years ago
  • geraldino
    What are energy requirements of skeletal muscle?
    8 years ago
  • hana tewelde
    What skeletal muscles use as source of energy?
    8 years ago
    How is energy for muscle obtained?
    8 years ago
  • erin
    How skeletal muscle metabolismfulfil the energy requirements?
    8 years ago
  • Sheryl
    How does skeletal muscle obtain energy?
    7 years ago
    What does skeletal muscle energy rquire?
    7 years ago
  • sheshy
    What are the energy sources of the skeletal muscles?
    7 years ago
  • marko
    How to skeletal muscles obtain energy?
    6 years ago
  • Elsie
    How do skeletal muscles obtain glucose?
    5 years ago
  • Nora
    How do muscles obtain enegry?
    5 years ago
  • Nebay
    What is energy souce of resting skeletal muscle?
    2 years ago
  • Shannon
    What is source of energy for skeltal muscle contraction in physiology?
    2 years ago
  • mario
    How do muscles obtain energy for contraction?
    1 year ago
  • Arto
    When a person is at rest how much energy do muscles use?
    7 months ago
  • vincenza
    How do skeletal muscles produce atp?
    24 days ago

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