Which of the Following Statements Is True Regarding Cardiac Muscle

question 52

Multiple Choice

Which of the following statements is true regarding cardiac muscle?

• A) Its main source of ATP production is glycogen.
• B) The actin and myosin myofilaments are not arranged in sarcomeres.
• C) Cardiac muscle preferentially metabolizes anaerobically.
• D) There are specialized gap junctions in cardiac muscle not found in skeletal or smooth muscles.
• E) Cardiac muscle goes into sustained contractions faster than skeletal muscle.

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