[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"kakomon-q-2025-ippan-57":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":15,"tags":30},"2025-ippan-57",2025,3,"一般","ippan",57,"心臓刺激伝導系でないのはどれか。",[12,16,20,22,25],{"index":13,"body":14,"is_correct":15},1,"腱索",true,{"index":17,"body":18,"is_correct":19},2,"房室結節",false,{"index":6,"body":21,"is_correct":19},"プルキンエ線維",{"index":23,"body":24,"is_correct":19},4,"洞房結節",{"index":26,"body":27,"is_correct":19},5,"ヒス束",[13],"正答は1（腱索）。腱索は房室弁（僧帽弁・三尖弁）と乳頭筋をつなぐ線維性のひもで、弁が反転しないよう支える装置であり、刺激伝導系ではない。2房室結節・3プルキンエ線維・4洞房結節・5ヒス束は、いずれも心臓の刺激伝導系を構成する（洞房結節→房室結節→ヒス束→プルキンエ線維の順に電気が伝わる）。**覚え方**: 刺激伝導系は『洞房結節→房室結節→ヒス束→脚→プルキンエ線維』。腱索は弁を支える別物。",null]