Cardiac Muscle Metabolism
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Questions and Answers

What is the primary source of energy for the contraction of cardiac myocytes?

  • Coronary arteries
  • Anaerobic respiration
  • Mitochondria (correct)
  • Myoglobin
  • Which pigment in cardiac myocytes is responsible for storing and transferring oxygen?

  • Rich blood supply
  • Myoglobin (correct)
  • Coronary arteries
  • Mitochondria
  • In which type of metabolism does aerobic respiration occur?

  • When oxygen is present (correct)
  • When mitochondria are inactive
  • During anaerobic respiration
  • When tissue is deprived of oxygen
  • Which process is employed by all tissues for the breakdown of glucose to provide energy?

    <p>Glycolysis</p> Signup and view all the answers

    What is the end product of glycolysis in cells with mitochondria and an adequate supply of oxygen?

    <p>Pyruvate</p> Signup and view all the answers

    Which specific material can pass across the cell membrane via protein channels?

    <p>Glucose</p> Signup and view all the answers

    What is required to reoxidize the NADH formed during glycolysis?

    <p>Oxygen</p> Signup and view all the answers

    Which metabolic pathway is at the hub of carbohydrate metabolism?

    <p>Glycolysis</p> Signup and view all the answers

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