[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"kakomon-q-2025-hissu-40":3},{"slug":4,"exam_year":5,"exam_round":6,"section":7,"section_code":8,"number":9,"body":10,"choices":11,"correct_indices":28,"explanation":29,"has_explanation":21,"tags":30},"2025-hissu-40",2025,3,"必須","hissu",40,"血液凝固因子はどれか。",[12,16,19,22,25],{"index":13,"body":14,"is_correct":15},1,"Feイオン",false,{"index":17,"body":18,"is_correct":15},2,"Naイオン",{"index":6,"body":20,"is_correct":21},"Caイオン",true,{"index":23,"body":24,"is_correct":15},4,"Pイオン",{"index":26,"body":27,"is_correct":15},5,"Mgイオン",[6],"正答は3（Caイオン）。カルシウムイオン（Ca²⁺）は血液凝固第Ⅳ因子として、凝固反応の多くの段階に必要。採血時にクエン酸などの抗凝固剤を使うのは、Ca²⁺を封鎖して凝固を止めるためである。1鉄・2ナトリウム・4リン・5マグネシウムの各イオンは凝固因子としては働かない。",null]