[{"data":1,"prerenderedAt":65},["ShallowReactive",2],{"q-nurse-108-2-basic-medicine-026":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":35,"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-108-2-基礎醫學-026","nurse-108-2-basic-medicine-026",108,2,26,"下列何種原因抑制懷孕時乳汁的製造？",{"A":15,"B":16,"C":17,"D":18},"泌乳素（prolactin）濃度過低，不足以刺激乳腺","人類胎盤泌乳素（human placental lactogen）過低","多巴胺（dopamin）抑制腦下腺合成泌乳素","雌激素（estrogen）與黃體素（progesterone）濃度高","D",null,[],"本題考點為懷孕期間乳汁製造受抑制的原因。懷孕時胎盤分泌大量雌激素與黃體素,雖能促進乳腺與乳管發育,卻同時抑制泌乳素對乳腺的泌乳作用,使乳汁製造受阻;直到分娩後胎盤娩出、雌激素與黃體素驟降,泌乳作用才解除抑制而啟動泌乳,故選D。A泌乳素在懷孕期其實是升高的,並非過低。B人類胎盤泌乳素在孕期反而升高,協助母體代謝調節。C多巴胺確實會抑制泌乳素分泌,但懷孕期泌乳素仍高,並非乳汁受抑的主因。判斷關鍵在於認清「高濃度雌激素與黃體素封鎖泌乳素的泌乳效應」是孕期不泌乳的核心機轉。","泌乳的荷爾蒙開關:孕期胎盤雌激素、黃體素高,促乳腺增生卻阻斷泌乳素在腺泡的作用(封鎖泌乳素受體訊號)。分娩後胎盤娩出→雌激素、黃體素驟降→解除抑制,泌乳素得以啟動泌乳。之後嬰兒吸吮刺激經神經反射維持泌乳素分泌並釋放催產素(引發乳汁噴出反射)。臨床連結:胎盤殘留會延遲泌乳,因雌黃體素仍高。記憶:「懷孕高雌黃卡住泌乳素,產後驟降才開奶」。",[25,28,31,33],{"term":26,"count":27},"泌乳素",3,{"term":29,"count":30},"雌激素與黃體素抑制泌乳",1,{"term":32,"count":30},"胎盤荷爾蒙",{"term":34,"count":30},"產後泌乳啟動",[36,40,45,49,54,59],{"webId":37,"stem":38,"number":39,"year":10,"session":11},"nurse-108-2-basic-medicine-027","何種休克會使心臟的血液輸出量增加？",27,{"webId":41,"stem":42,"number":43,"year":44,"session":30},"nurse-109-1-basic-medicine-043","有關急性淋巴母細胞性白血病（Acute lymphoblastic leukemia\u002Flymphoma）的病理敘述，下列何者錯誤？",43,109,{"webId":46,"stem":47,"number":48,"year":44,"session":11},"nurse-109-2-basic-medicine-057","Lorcaserin是透過刺激下列何種受體去抑制食慾，而達到減重效果？",57,{"webId":50,"stem":51,"number":52,"year":53,"session":30},"nurse-111-1-basic-medicine-015","中腦內不具有下列何者？",15,111,{"webId":55,"stem":56,"number":57,"year":58,"session":11},"nurse-112-2-basic-medicine-039","Leucovorin 常用於降低下列何種抗癌藥物之副作用？",39,112,{"webId":60,"stem":61,"number":62,"year":63,"session":27},"nurse-113-3-basic-medicine-033","下列藥物中，何者不作為躁鬱症（mania and bipolar disorder）的治療用藥？",33,113,"2026-09-04",1788510705013]