Question

The ion helpful for controlling heart beating and muscle contraction is:

• A. $M{g}^{2+}$
• B. $N{a}^{+}$
• C. $K^{+}$
• D. $C{a}^{2+}$

Answer 1

The correct option is D $C{a}^{2+}$

${Ca}^{2+}$ is the ion helpful for controlling heart beat and muscle contraction.