[{"data":1,"prerenderedAt":67},["ShallowReactive",2],{"q-nurse-109-2-basic-medicine-020":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":38,"lastmod":66},"基礎醫學","basic-medicine","基礎醫學(包括解剖學、生理學、病理學、藥理學、微生物學與免疫學)",{"id":8,"webId":9,"year":10,"session":11,"subject":4,"number":12,"stem":13,"options":14,"answer":19,"answerNote":20,"images":21,"explanation":22,"explanationDeep":23,"topics":24,"freq":27},"nurse-109-2-基礎醫學-020","nurse-109-2-basic-medicine-020",109,2,20,"第一心音發生在下列何時？",{"A":15,"B":16,"C":17,"D":18},"心房收縮時","早期心室舒張時","主動脈瓣關閉時","房室瓣關閉時","D",null,[],"本題考點是心音的產生時機與瓣膜活動的對應。依心動週期生理,第一心音(S1)由心室開始收縮時房室瓣(二尖瓣與三尖瓣)關閉所引起的振動產生,標誌收縮期的起點,故正解D「房室瓣關閉時」。A心房收縮時對應的是第四心音(S4,若出現),而非S1。B早期心室舒張時心室快速充盈,對應的是第三心音(S3),非S1。C主動脈瓣關閉屬半月瓣關閉,產生的是第二心音(S2),標示收縮期結束、舒張期開始,與S1不同。掌握「S1=房室瓣關(收縮始)、S2=半月瓣關(收縮終)」即可鎖定D。","心音對照:S1(lub)房室瓣關,聽診於心尖最清;S2(dub)主動脈瓣與肺動脈瓣關,吸氣時可見生理性分裂;S3為心室快速充盈期血流衝擊,年輕人可正常,老年人常示心衰;S4為心房用力擠入僵硬心室,見於心室肥厚。瓣膜開關順序記憶:收縮期房室瓣先關(S1)、半月瓣後開,舒張期半月瓣先關(S2)、房室瓣後開。心雜音的收縮期\u002F舒張期定位即以S1、S2為時間座標。",[25,28,31,33,35],{"term":26,"count":27},"第一心音",4,{"term":29,"count":30},"心動週期",3,{"term":32,"count":30},"第二心音",{"term":34,"count":11},"房室瓣關閉",{"term":36,"count":37},"心室收縮期",1,[39,43,48,52,57,62],{"webId":40,"stem":41,"number":42,"year":10,"session":11},"nurse-109-2-basic-medicine-021","與正常人相比較，部分呼吸道狹窄的患者，其第一秒內用力呼氣體積（forced expiratory volume at the first second）與用力呼氣肺活量（forced vital capacity）之改變，下列何者正確？",21,{"webId":44,"stem":45,"number":46,"year":47,"session":37},"nurse-110-1-basic-medicine-037","下列何者不是潰瘍性結腸炎（ulcerative colitis）的臨床病理特徵？",37,110,{"webId":49,"stem":50,"number":51,"year":47,"session":11},"nurse-110-2-basic-medicine-051","治療糖尿病的用藥中，下列何者的主要作用是刺激胰臟β細胞釋放insulin？",51,{"webId":53,"stem":54,"number":55,"year":56,"session":37},"nurse-112-1-basic-medicine-039","有關泌乳激素 prolactin 的敘述，下列何者錯誤？",39,112,{"webId":58,"stem":59,"number":60,"year":61,"session":11},"nurse-113-2-basic-medicine-043","下列何種細胞具有抑制 CD4 與 CD8 T 細胞活性的功能？",43,113,{"webId":63,"stem":64,"number":46,"year":65,"session":30},"nurse-114-3-basic-medicine-037","下列藥物中，何者可活化中樞神經 α2 受體，進而減少交感神經活性而達到降血壓效果？",114,"2026-09-04",1788510714912]