题目内容

髓袢升支粗段对NaCl的继发性主动转运可造成

A. 髓质渗透浓度由内向外逐渐升高
B. 内髓质间质组织液渗透压梯度
C. 外髓质间质渗透压梯度
D. 远端小管始段小管液高渗
E. 集合管内尿素稀释

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参与肾脏内髓部渗透压梯度形成的主要溶质是

A. 磷酸盐和NaCl
B. KCl和尿素
C. 尿素和葡萄糖
D. NaCl和KCl
E. 尿素和NaCl

下列各段肾小管和集合管中，尿素最容易通透的部位是

A. 髓袢降支细段
B. 髓袢升支粗段
C. 远端小管
D. 皮质部集合管
E. 内髓部集合管

建立肾脏外髓组织间液渗透梯度的主要溶质是

A. NaCl
B. 尿素
C. NaCl和尿素
D. KCl
E. 肌酐

请根据短文5B“Begin Again”的内容补全以下每个句子。1. All too many people have ___ or are battling cancer.2. Being thought of as _, the author has even more people contacting him.3. In the darkest hours of one's life, those encouraging words would seem _.4. Even those who were quick to quate the Bible to me found me quite _ at the time.5. A _ does not mean you are through loving or being loved.6. A life-threatening disease does not mean___.