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【单选题】
患儿男，5岁，自幼瘦弱，不爱活动，易疲劳，来院确诊。无青紫，胸骨左缘第3～4肋间可闻及Ⅲ～Ⅳ／6收缩期杂音，粗糙且伴震颤，肺动脉第二心音进。此病的主要病理生理改变为肺循环充血，体循环少血和如下哪种表现（）A.
脉压差增大
B.
右房增大
C.
肥厚
D.
E.
生后有暂时性青紫
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皮皮学刷刷变学霸
举一反三
【单选题】In the earliest stage of embryogenesis, the hematopoietic stem cells arise from the blood islands of:
A.
liver
B.
yolk sac
C.
bone marrow
D.
spleen
E.
amnion
【多选题】A hematopoietic stem cell is defined as
A.
a cell with extensive self-renewal and proliferative potential
B.
a cell only to produce daughter cells with identical characteristics
C.
a cell with the capacity to differentiate into the progenitors of all the blood cell lineages
D.
a cell With the capacity to produce some hematopoietic growth factors such as SCF，GM-CSFs，et．a1．
E.
a cell with the capacity to express some specific surface antigens such as CD34
【单选题】Hematopoietic stem cell transplantation can be used to treat leukemia because stem cells have the greatest potential of _____.
A.
differentiation
B.
division
C.
reproduction
D.
growing
【单选题】胃手术后护理措施不正确的是
A.
胃管没有血性液体流出即可拔除
B.
拔管后当日可给少量饮水
C.
拔管后第2日给少量流质
D.
拔管后第4日可改半流质
E.
拔管后1月内应少食多餐
【单选题】Which of the following stem cells have the potential to develop into a complete individual?
A.
Mesenchymal stem cells
B.
Neuronal stem cells
C.
Embryonic stem cells
D.
Hematopoietic stem cells
【单选题】胃手术后护理措施不正确的是
A.
胃管若无血性液流出即可拔管
B.
拔管后当日可给少量饮水
C.
拔管后第2日给少量流质
D.
拔管后第4日可改半流质
E.
拔管后1个月内应少食多餐
【单选题】the hematopoietic stem cell originate from:
A.
neural crest
B.
somatopleure
C.
neural tube
D.
mesoderm
E.
york sak
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