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Author Question: Which of the following ions has a direct effect on ventricular muscle contraction? (Read 98 times)

ashley

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Question 1

Which of the following is NOT true?
◦ Cardiac contraction requires the presence of calcium ions.
◦ Cardiac cells must be depolarized before they can contract.
◦ Cardiac contraction occurs as a result of phase 0 of the action potential.
◦ Cardiac cells can contract without having been depolarized.

Question 2

Which of the following ions has a direct effect on ventricular muscle contraction?
◦ Calcium
◦ Potassium
◦ Sodium
◦ Magnesium


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Marked as best answer by ashley on Apr 15, 2019

emily12345

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emily12345

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