[{"data":1,"prerenderedAt":48},["ShallowReactive",2],{"q-nurse-109-2-basic-medicine-018":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":24},"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,"freq":23},"nurse-109-2-基礎醫學-018","nurse-109-2-basic-medicine-018",109,2,18,"心肌不會發生收縮力加成作用（summation）的原因，主要是下列何者？",{"A":15,"B":16,"C":17,"D":18},"心肌沒有橫小管（transverse tubule）","心肌的不反應期時間幾乎與其收縮時間重疊","心肌的動作電位不會加成","心肌肌漿網（sarcoplasmic reticulum）不發達","B",null,[],"本題考點是心肌無法產生收縮加成(summation)與強直收縮的生理機制。依心肌電生理，心肌動作電位有很長的絕對不反應期(約250-300毫秒)，幾乎涵蓋整個收縮期,在此期間細胞無法被再次興奮,故新刺激無法在前次收縮尚未鬆弛前疊加上去,因而不會發生加成或強直,正解B。A橫小管(T-tubule)心肌其實有,且較粗大,並非缺乏。C「動作電位不會加成」說法本末倒置:重點是不反應期長,而非電位本身,且此敘述並未指出真正機轉。D心肌的肌漿網雖較骨骼肌不發達,但這關係到鈣供應而非防止加成,並非主因。故防止加成的關鍵在超長不反應期。",1,[25,29,32,36,40,44],{"webId":26,"stem":27,"number":23,"year":28,"session":23},"nurse-106-1-basic-medicine-001","下列有關表皮的敘述，何者正確？",106,{"webId":30,"stem":31,"number":11,"year":28,"session":23},"nurse-106-1-basic-medicine-002","下列何者在組織學特徵上可區分為絲球帶（zona glomerulosa）、束狀帶（zona fasciculata）、網狀帶（zona reticularis）？",{"webId":33,"stem":34,"number":35,"year":28,"session":23},"nurse-106-1-basic-medicine-003","顴弓（zygomatic arch）是由顴骨與下列何者共同組成？",3,{"webId":37,"stem":38,"number":39,"year":28,"session":23},"nurse-106-1-basic-medicine-004","下列何者參與形成踝關節？",4,{"webId":41,"stem":42,"number":43,"year":28,"session":23},"nurse-106-1-basic-medicine-005","下列何者是維持背部直立最重要的肌肉？",5,{"webId":45,"stem":46,"number":47,"year":28,"session":23},"nurse-106-1-basic-medicine-006","行走於前臂的內側，並與上臂深層的靜脈會合成腋靜脈的是那一條血管？",6,1783840753278]