[{"data":1,"prerenderedAt":64},["ShallowReactive",2],{"q-nurse-107-1-basic-medicine-018":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":34,"lastmod":63},"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-107-1-基礎醫學-018","nurse-107-1-basic-medicine-018",107,1,18,"骨骼肌收縮時的鈣離子是從那種鈣通道釋放出來？",{"A":15,"B":16,"C":17,"D":18},"肌醇三磷酸受體（IP 3 receptor）","雷恩諾鹼受體（ryanodine receptor）","乙醯膽鹼受體（ACh receptor）","磷酸脂肌醇二磷酸受體（PIP 2 receptor）","B",null,[],"本題考點是骨骼肌興奮收縮偶聯中鈣離子的釋放通道。依肌肉生理，骨骼肌動作電位沿 T 小管傳入，經 DHP 受體機械偶聯活化肌漿內質網上的雷恩諾鹼受體（ryanodine receptor, RyR），使鈣離子從肌漿內質網釋出啟動收縮，故選 B。IP₃ 受體（A）主要見於平滑肌與非肌細胞的鈣釋放；ACh 受體（C）是神經肌肉接合處的離子通道，非 SR 鈣通道；PIP₂（D）為膜磷脂訊息前驅物，非鈣通道。判斷關鍵在於認得 RyR 為骨骼肌 SR 的鈣釋放通道。","骨骼肌興奮收縮偶聯：T 小管去極化→ DHP 受體（電壓感應器）構型改變→機械式打開相鄰的 RyR1 →鈣自 SR 釋出→結合旋轉素 C（troponin C）→原肌凝蛋白移位露出肌動蛋白結合點→橫橋循環。對比：心肌則靠鈣誘發鈣釋放（CICR），先有少量鈣經 L 型通道進入再觸發 RyR2。記法：「骨骼肌 RyR1 機械偶聯、心肌 RyR2 靠鈣誘發」。",[25,28,30,32],{"term":26,"count":27},"興奮收縮偶聯",3,{"term":29,"count":11},"雷恩諾鹼受體(RyR)",{"term":31,"count":11},"肌漿內質網",{"term":33,"count":11},"DHP 受體",[35,39,44,49,54,59],{"webId":36,"stem":37,"number":38,"year":10,"session":11},"nurse-107-1-basic-medicine-019","當迷走神經興奮時，對心臟的影響下列何者正確？",19,{"webId":40,"stem":41,"number":42,"year":10,"session":43},"nurse-107-2-basic-medicine-035","關於糖尿病之敘述，下列何者錯誤？",35,2,{"webId":45,"stem":46,"number":47,"year":48,"session":11},"nurse-108-1-basic-medicine-049","組織胺（histamine）會作用於氣管平滑肌 H 1 受體，而引起氣管痙攣；此時，給予腎上腺素（epinephrine）則可活化氣管平滑肌 β 2 受體而使之鬆弛。此例中腎上腺素對抗組織胺的氣管痙攣作用是屬於何種拮抗（antagonism）？",49,108,{"webId":50,"stem":51,"number":52,"year":53,"session":43},"nurse-109-2-basic-medicine-007","下列何者的血液供應不源自腹腔動脈幹（celiac trunk）的分枝？",7,109,{"webId":55,"stem":56,"number":57,"year":58,"session":43},"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？",51,110,{"webId":60,"stem":61,"number":42,"year":62,"session":11},"nurse-112-1-basic-medicine-035","下列何種酶可被咖啡因抑制？",112,"2026-09-04",1788510700985]