In Which of the Following Forms Does Ca²⁺ Exhibit Profound

question 154

Multiple Choice

In which of the following forms does Ca²⁺ exhibit profound effects on such things as neuromuscular excitability?

• A) free, unbound diffusible Ca²⁺
• B) intracellular Ca²⁺
• C) calcium phosphate crystals impregnated in the organic matrix of bone
• D) calcium bound to plasma proteins

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