[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"kakomon-q-2026-jitchi-2":3},{"slug":4,"exam_year":5,"exam_round":6,"section":7,"section_code":8,"number":9,"body":10,"choices":11,"correct_indices":27,"explanation":28,"has_explanation":18,"tags":29},"2026-jitchi-2",2026,4,"実地","jitchi",2,"図は犬の心臓の刺激伝導系である。房室結節はどれか。",[12,16,19,22,24],{"index":13,"body":14,"is_correct":15},1,"（ア）",false,{"index":9,"body":17,"is_correct":18},"（イ）",true,{"index":20,"body":21,"is_correct":15},3,"（ウ）",{"index":6,"body":23,"is_correct":15},"（エ）",{"index":25,"body":26,"is_correct":15},5,"（オ）",[9],"正答は2（（イ））。刺激伝導系は、洞房結節→房室結節→ヒス束→脚→プルキンエ線維の順に興奮が伝わる。房室結節は心房と心室の境にあり、図の（イ）がこれにあたる。（ア）洞房結節・（ウ）ヒス束・（エ）脚・（オ）プルキンエ線維など、房室結節以外の部位は該当しない。よって（イ）。**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。房室結節は心房と心室の中継点。",null]