[{"data":1,"prerenderedAt":69},["ShallowReactive",2],{"q-nurse-108-2-basic-medicine-070":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":37,"lastmod":68},"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-108-2-基礎醫學-070","nurse-108-2-basic-medicine-070",108,2,70,"下列何者為胸腺的功能？",{"A":15,"B":16,"C":17,"D":18},"選出可產生抗體的 B 淋巴球","產生胸腺素活化巨噬細胞","使淋巴樹突細胞成熟並活化","剔除有自體反應性的 T 淋巴球","D",null,[],"本題考點為胸腺（thymus）於 T 細胞成熟中的角色。依免疫學，胸腺是 T 淋巴球成熟場所，經正選擇保留能辨識自體 MHC 者、負選擇則剔除對自體抗原有強反應性的 T 淋巴球以建立中樞耐受性，故選 D。（A）選出可產生抗體的 B 淋巴球屬骨髓與周邊淋巴組織功能，非胸腺。（B）胸腺素促 T 細胞分化而非活化巨噬細胞，敘述不符主功能。（C）淋巴樹突細胞的成熟活化發生於周邊，非胸腺核心功能。","胸腺內 T 細胞歷經雙重篩選：正選擇（能弱結合自體 MHC 者存活）與負選擇（強結合自體抗原者凋亡），後者即清除自反應性 T 細胞、防止自體免疫，是中樞耐受的基石。若負選擇失靈，自反應 T 細胞外流可致自體免疫疾病。對照：B 細胞中樞耐受在骨髓完成。記憶：胸腺＝T 細胞學校，畢業條件是『認得自己 MHC 但不攻擊自己』，D 描述的正是負選擇這道退學機制。",[25,28,31,33,35],{"term":26,"count":27},"胸腺",4,{"term":29,"count":30},"T 細胞負選擇",1,{"term":32,"count":30},"中樞耐受性",{"term":34,"count":30},"自體反應性 T 淋巴球",{"term":36,"count":30},"正選擇",[38,42,47,52,57,63],{"webId":39,"stem":40,"number":41,"year":10,"session":11},"nurse-108-2-basic-medicine-071","對反轉錄病毒的敘述，下列何者錯誤？",71,{"webId":43,"stem":44,"number":45,"year":46,"session":11},"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":48,"stem":49,"number":50,"year":51,"session":30},"nurse-110-1-basic-medicine-021","下列何者在小腸液中的含量最低？",21,110,{"webId":53,"stem":54,"number":55,"year":56,"session":30},"nurse-111-1-basic-medicine-059","下列抗高血壓治療藥物，何者不會產生心搏過速之副作用？",59,111,{"webId":58,"stem":59,"number":60,"year":61,"session":62},"nurse-112-3-basic-medicine-033","下列何種藥物最適合給與初診斷為第二型糖尿病且尚無併發症之病人？",33,112,3,{"webId":64,"stem":65,"number":66,"year":67,"session":30},"nurse-114-1-basic-medicine-027","有關家族性腺瘤性息肉症（familial adenomatous polyposis），下列敘述何者錯誤？",27,114,"2026-09-04",1788510705417]