[{"data":1,"prerenderedAt":65},["ShallowReactive",2],{"q-nurse-108-2-basic-medicine-020":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":34,"lastmod":64},"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":11},"nurse-108-2-基礎醫學-020","nurse-108-2-basic-medicine-020",108,2,20,"下列有關肌原纖維（myofibril）的敘述，何者正確？",{"A":15,"B":16,"C":17,"D":18},"由單一骨骼肌細胞（skeletal muscle cell）組成","圓柱形的肌原纖維由肌絲（muscle fiber）組成","為肌肉組織中儲存鈣離子的膜狀結構","直接連接肌肉細胞和肌腱（tendon）","B",null,[],"本題考點為骨骼肌的層級構造。肌原纖維(myofibril)是位於肌肉細胞內、由更細的肌絲(肌動蛋白與肌凝蛋白)平行排列而成的圓柱狀結構,故正確敘述為肌原纖維由肌絲組成,選B。A錯誤,順序顛倒;是單一骨骼肌細胞內含許多肌原纖維,而非肌原纖維由整條肌細胞組成。C錯誤,儲存鈣離子的膜狀結構是肌漿網(sarcoplasmic reticulum),不是肌原纖維。D錯誤,直接連接肌肉細胞與肌腱的是肌內膜、肌束膜等結締組織延伸,而非肌原纖維。判斷關鍵在於掌握「肌絲→肌原纖維→肌細胞(肌纖維)→肌束→肌肉」由小至大的層級。","骨骼肌層級由小到大:肌絲(actin細絲、myosin粗絲)→肌節(sarcomere,Z線至Z線)→肌原纖維→肌纖維(肌細胞)→肌束→整條肌肉。肌漿網環繞肌原纖維儲存鈣離子,興奮時釋出鈣觸發收縮(興奮收縮偶聯)。橫小管將動作電位傳入細胞深部。對比記憶:肌節是最小收縮單位,由粗細肌絲互滑造成A帶不變、I帶與H帶縮短(滑動絲學說)。橫紋來自粗細肌絲規律重疊的明暗排列。",[25,27,30,32],{"term":26,"count":11},"肌原纖維",{"term":28,"count":29},"肌絲",1,{"term":31,"count":29},"骨骼肌層級",{"term":33,"count":29},"肌漿網儲鈣",[35,39,44,48,53,58],{"webId":36,"stem":37,"number":38,"year":10,"session":11},"nurse-108-2-basic-medicine-021","以腦波圖（electroencephalogram）檢測一位清醒、有意識的成人，觀察到大量的 δ 波，顯示此人較可能處於下列何種情境？",21,{"webId":40,"stem":41,"number":42,"year":43,"session":29},"nurse-109-1-basic-medicine-037","下列那一種肝炎病毒主要是經口傳染的？",37,109,{"webId":45,"stem":46,"number":47,"year":43,"session":11},"nurse-109-2-basic-medicine-051","口服降血糖藥物首選雙胍（biguanides）類用藥，下列何者為最常見的副作用？",51,{"webId":49,"stem":50,"number":51,"year":52,"session":29},"nurse-111-1-basic-medicine-009","下列器官的主要養分來源，何者不是來自髂內動脈？",9,111,{"webId":54,"stem":55,"number":56,"year":57,"session":11},"nurse-112-2-basic-medicine-033","使用局部麻醉劑時，併用 epinephrine 的主要目的為何？",33,112,{"webId":59,"stem":60,"number":61,"year":62,"session":63},"nurse-113-3-basic-medicine-027","肝硬化（cirrhosis）會造成腹水（ascites）是和下列何種原因有關？",27,113,3,"2026-09-04",1788510704944]