The ion that increases its intracellular concentration in order to trigger the release of neurotransmitters is _____. A)Ca²⁺ B)Mg²⁺ C)HCO₃^- D)K⁺ E)Cl^-

Question

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The ion that increases its intracellular concentration to trigger the release of neurotransmitters is calcium (Ca2+). Option A represents Ca2+ with its proper charge and symbol, making it the correct answer. Option B is magnesium (Mg2+), which is not involved in neurotransmitter release. Option C is bicarbonate ion (HCO3-), which does not play a role in triggering neurotransmitter release. Option D is potassium (K+), which does not have a direct role in neurotransmitter release. Option E is chloride (Cl-), which can modulate neurotransmitter release but does not trigger it.

The Ion That Increases Its Intracellular Concentration in Order to Trigger