[{"data":1,"prerenderedAt":67},["ShallowReactive",2],{"q-nurse-113-3-basic-medicine-009":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":37,"lastmod":66},"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-113-3-基礎醫學-009","nurse-113-3-basic-medicine-009",113,3,9,"下列何者分泌內在因子（intrinsic factor），以協助維生素 B 12 之吸收？",{"A":15,"B":16,"C":17,"D":18},"胃壁細胞（parietal cells）","胃主細胞（chief cells）","胰島細胞（islet cells）","胰腺泡細胞（acinar cells）","A",null,[],"本題考點在於胃黏膜各細胞的分泌功能與內在因子來源。內在因子由胃底腺的壁細胞(parietal cells,又稱泌酸細胞)分泌,可與維生素 B12 結合並保護其通過小腸,於迴腸末端被吸收,故選 A。壁細胞同時分泌鹽酸,是雙重功能。B 主細胞分泌胃蛋白酶原(pepsinogen),經胃酸活化為胃蛋白酶以分解蛋白質,不分泌內在因子。C 胰島細胞分泌胰島素、升糖素等內分泌激素,屬血糖調控,與 B12 吸收無關。D 胰腺泡細胞分泌胰消化酵素(如脂解酶、澱粉酶)進入腸道,亦非內在因子來源。記住「壁細胞＝酸＋內在因子」的雙重角色即可鎖定答案。","內在因子缺乏是惡性貧血的機轉:自體免疫破壞壁細胞或萎縮性胃炎使內在因子不足,B12 無法在迴腸吸收,導致巨球性貧血合併神經症狀(亞急性脊髓合併變性)。全胃切除或迴腸末端切除者亦會缺 B12,須終身注射補充。記憶口訣:壁細胞管酸(HCl)與吸收(內在因子),主細胞管酶(pepsinogen)。B12 吸收路徑長:唾液 R 蛋白先結合→胰酶釋出→內在因子接手→迴腸受體吸收,任一環節壞掉都會缺乏。",[25,28,31,34],{"term":26,"count":27},"內在因子",6,{"term":29,"count":30},"壁細胞",5,{"term":32,"count":33},"惡性貧血",4,{"term":35,"count":36},"維生素 B12",1,[38,42,47,51,56,61],{"webId":39,"stem":40,"number":41,"year":10,"session":11},"nurse-113-3-basic-medicine-010","下列何者具有明顯之環狀皺襞（circular folds）？",10,{"webId":43,"stem":44,"number":27,"year":45,"session":46},"nurse-114-2-basic-medicine-006","下列何者與男性陰莖的龜頭，都是由尿道海綿體（corpus spongiosum）構成？",114,2,{"webId":48,"stem":49,"number":50,"year":45,"session":11},"nurse-114-3-basic-medicine-050","有關傳染性蛋白質（prion）的特性，下列敘述何者最適當？",50,{"webId":52,"stem":53,"number":54,"year":55,"session":46},"nurse-106-2-basic-medicine-018","下列那些肌細胞有明顯的明暗相間之橫紋構造？",18,106,{"webId":57,"stem":58,"number":59,"year":60,"session":46},"nurse-107-2-basic-medicine-062","有關藥物併用的敘述，下列何者錯誤？",62,107,{"webId":62,"stem":63,"number":64,"year":65,"session":36},"nurse-109-1-basic-medicine-016","下列何種器官不釋放內分泌激素？",16,109,"2026-09-04",1788510751567]