Monday, November 29, 2010

5
Limbic system中與恐懼情緒(fear)關係密切之結構為何?
thalamus hippocampus fornix amygdaloid nuclei
D

AMY=FEAR


7
移除骨骼肌細胞質液(cytosol)內的鈣離子,會產生下列何種現象?
肌動蛋白(actin)上的肌凝蛋白(myosin)連接處,經旋轉肌凝蛋白(tropomyosin)作用而暴露出來
旋轉肌凝蛋白會改變形態,使得旋轉子(troponin)從連接橋(cross-bridge)結合處離開
旋轉子會改變形態,使得連接橋結合處暴露出來
肌動蛋白上的肌凝蛋白連接處,被旋轉肌凝蛋白占據
D

RETWIST BACK TO ORIGINAL STATE!!!



9
下列那一個因子必須在血管內皮細胞與其受器(receptor)結合,活化蛋白質C以減低凝血效應?
凝血酶(thrombin) 血漿素(plasmin) 肝素(heparin) 維生素K
A

Negative feedback

Thrombin bound to thrombomodulin activates protein C, an inhibitor of the coagulation cascade. The activation of protein C is greatly enhanced following the binding of thrombin to thrombomodulin, an integral membrane protein expressed by endothelial cells. Activated protein C inactivates factors Va and VIIIa. Binding of activated protein C to protein S leads to a modest increase in its activity. Thrombin is also inactivated by antithrombin, a serine protease inhibitor




12

下列關於輔脂酶(colipase)之敘述,何者正確?

位於小腸上皮細胞膜上

負責消化三酸甘油酯(triglycerides)

可將脂肪酶原(prolipase)轉化成脂肪酶(lipase)

避免脂肪酶(lipase)受到膽鹽的影響而降低其活性

D




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