Question

Which of the following is important for muscle contraction and nerve impulse transmission?

Ca²⁺ ions

Ca²⁺ and Mg²⁺ ions

Mg²⁺ ions

Fe²⁺ ions

Solution

Ca²⁺ and Mg²⁺ ions

Ion	Important for
Ca²⁺	Muscle contraction and nerve impulse transmission
Mg²⁺	Muscle contraction
Na²⁺	Nerve impulse transmission
K⁺	Nerve impulse transmission and muscle contraction

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