[{"data":1,"prerenderedAt":65},["ShallowReactive",2],{"q-nurse-109-2-basic-medicine-028":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":37,"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":27},"nurse-109-2-基礎醫學-028","nurse-109-2-basic-medicine-028",109,2,28,"下列何者為心臟收縮最主要的能量來源？",{"A":15,"B":16,"C":17,"D":18},"葡萄糖","蛋白質","脂肪酸","核酸","C",null,[],"本題考點是心肌收縮的主要能量基質來源。依心肌能量代謝,健康心臟在有氧狀態下約60-70%的ATP來自脂肪酸(fatty acid)的β氧化,是心臟收縮最主要的能量來源,故正解C。A葡萄糖雖是重要基質,但在正常有氧供應下佔比低於脂肪酸,僅在缺血或高負荷時比重上升,並非首要來源。B蛋白質(胺基酸)主要供結構與合成,作為能量來源的貢獻極小,並非心肌主要燃料。D核酸是遺傳物質與核苷酸合成原料,不作為產能基質。故心肌首選脂肪酸供能,選C。","心肌是「代謝雜食者」,可依供應彈性切換基質:正常時脂肪酸β氧化為主(進入粒線體需肉鹼carnitine載運),葡萄糖與乳酸次之。缺血時因氧不足,心肌轉向較省氧的葡萄糖無氧糖解,這是代謝治療(如trimetazidine抑制脂肪酸氧化改善心絞痛)的原理。心肌粒線體密度極高(佔細胞體積約1\u002F3)以支撐持續耗能。記憶:「有氧燒脂肪、缺血靠葡萄糖」。心肌幾乎無法儲存能量,故對持續血流依賴極高。",[25,28,31,33,35],{"term":26,"count":27},"ATP",3,{"term":29,"count":30},"心肌能量代謝",1,{"term":32,"count":30},"脂肪酸β氧化",{"term":34,"count":30},"葡萄糖無氧糖解",{"term":36,"count":30},"肉鹼運輸",[38,42,47,51,56,60],{"webId":39,"stem":40,"number":41,"year":10,"session":11},"nurse-109-2-basic-medicine-029","高鉀食物會造成下列那一段腎小管增加鉀的分泌？",29,{"webId":43,"stem":44,"number":45,"year":46,"session":30},"nurse-110-1-basic-medicine-045","病人突然發生呼吸短促、呼吸困難。顯微鏡下可見支氣管壁的平滑肌肥大，黏膜下腺體增生，伴有炎症反應，特別是嗜酸性白血球（eosinophils）增多。上列敘述最可能是那一種病症的組織反應？",45,110,{"webId":48,"stem":49,"number":50,"year":46,"session":11},"nurse-110-2-basic-medicine-059","抗高血壓藥物 Aliskiren 的藥理作用為何？",59,{"webId":52,"stem":53,"number":54,"year":55,"session":30},"nurse-112-1-basic-medicine-047","下列何種病毒感染與鼻咽癌的形成最有關？",47,112,{"webId":57,"stem":58,"number":30,"year":59,"session":27},"nurse-113-3-basic-medicine-001","大轉子（greater trochanter）位於下列那塊骨骼？",113,{"webId":61,"stem":62,"number":45,"year":63,"session":27},"nurse-114-3-basic-medicine-045","關於細菌毒素與毒性作用的相關性，下列敘述何者正確？",114,"2026-09-04",1788510714993]