[{"data":1,"prerenderedAt":64},["ShallowReactive",2],{"q-nurse-108-1-basic-medicine-015":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-108-1-基礎醫學-015","nurse-108-1-basic-medicine-015",108,1,15,"下列何者位於延腦的錐體（pyramids）？",{"A":15,"B":16,"C":17,"D":18},"紅核脊髓徑（rubrospinal tract）","皮質脊髓徑（corticospinal tract）","四疊體脊髓徑（tectospinal tract）","前庭脊髓徑（vestibulospinal tract）","B",null,[],"本題考點是延腦錐體(pyramids)所含的傳導徑。依神經解剖,延腦腹側的錐體由皮質脊髓徑(corticospinal tract)構成,是大腦運動皮質下行控制骨骼肌隨意運動的主要路徑,並在延腦下端大部交叉至對側(錐體交叉),故選B。A紅核脊髓徑起自中腦紅核、走延腦外側非錐體;C四疊體脊髓徑起自中腦上丘、與視覺反射有關;D前庭脊髓徑起自前庭核、與平衡姿勢有關,三者皆屬錐體外系或其他下行徑,不位於錐體。此題關鍵在把「錐體=皮質脊髓徑」直接對應。","皮質脊髓徑是隨意運動的主幹:自運動皮質下行經內囊、大腦腳、橋腦,至延腦形成腹側的錐體隆起,約85%纖維在錐體交叉處越至對側成側皮質脊髓徑,故一側運動皮質支配對側肢體。臨床上錐體徑受損出現上運動神經元徵象(痙攣性癱瘓、反射亢進、巴賓斯基徵陽性)。「錐體系」專指皮質脊髓與皮質延髓徑,其餘紅核、前庭、頂蓋、網狀脊髓徑統稱錐體外系,調節肌張力與姿勢。",[25,28,30,32],{"term":26,"count":27},"皮質脊髓徑",2,{"term":29,"count":27},"錐體交叉",{"term":31,"count":11},"延腦錐體",{"term":33,"count":11},"上運動神經元",[35,39,43,48,53,58],{"webId":36,"stem":37,"number":38,"year":10,"session":11},"nurse-108-1-basic-medicine-016","眼睛的水樣液（aquemous humor）是由何構造分泌？",16,{"webId":40,"stem":41,"number":42,"year":10,"session":27},"nurse-108-2-basic-medicine-032","下列那一項不屬於進食誘發吞嚥反射（swallowing reflex）？",32,{"webId":44,"stem":45,"number":46,"year":47,"session":11},"nurse-109-1-basic-medicine-046","下列關於乳癌的敘述何者錯誤？",46,109,{"webId":49,"stem":50,"number":51,"year":52,"session":27},"nurse-110-2-basic-medicine-004","下列何者同時供應小腸與大腸？",4,110,{"webId":54,"stem":55,"number":56,"year":57,"session":27},"nurse-111-2-basic-medicine-048","有關梅毒（syphilis）的敘述，下列何者正確？",48,111,{"webId":59,"stem":60,"number":61,"year":62,"session":11},"nurse-113-1-basic-medicine-042","下列那個酵素主要負責B細胞的體細胞超突變（somatic hypermutation）？",42,113,"2026-09-04",1788510708237]