正常一位92岁的老人诉持续4天腹泻后脱水。在这种情况下,预期下列那个部位的液体是低渗的?
A.肾小球滤液
B.近端小管
C.髓袢升支粗段
D.皮质集合管
- · 有4位网友选择 B,占比44.44%
- · 有3位网友选择 D,占比33.33%
- · 有2位网友选择 C,占比22.22%
A.肾小球滤液
B.近端小管
C.髓袢升支粗段
D.皮质集合管
A. 0.5%~1.O%
B. 0.3%~0.5%
C. 0.2%~0.3%
D. 1.0%~1.5%
E. 1.5%~3.0%
A. 1.5%~3.0%
B. 0.5%~1.0%
C. 0.15%~0.3%
D. 0.2%~0.5%
E. 1.2%~1.5%
A.治疗时注意到给钾前6小时曾排尿
B.静脉钾盐点滴浓度不超过0.3%
C.滴注时间不少于6~8小时
D.脱水纠正后第二天停止补钾
E.补钾量一般为3~4mmol/(kg.d)
A、高渗尿,尿量增多
B、低渗尿,尿量增多
C、高渗尿,尿量减少
D、低渗尿,尿量减少
A、About 2/3 of water and NaCl filtered are reabsorbed in the proximal tubule
B、In the first part of the proximal tubule the amounts of bicarbonate and Cl– reabsorbed are roughly equal
C、Secretion of organic anions and cations occurs mostly in the second part of the proximal tubule
D、The Na-H exchanger in the luminal membrane plays a central role in the reabsorption of bicarbonate
A、The rate of filtration of creatinine is 1.25 mg/min
B、The clearance of creatinine is 125 ml/min
C、The net rate of secretion of creatinine by the tubules is 0.1 mg/min
D、The rate of creatinine excretion is 1.35 mg/min
A、The rate at which glucose is filtered at the glomerulus is 500 mg/min
B、The rate at which glucose is excreted is 120 mg/min
C、The net rate of tubular reabsorption of glucose is 380 mg/min
D、The highest plasma level for which all the filtered glucose could be reabsorbed is 2.5 mg/ml
A、细胞内液
B、血浆胶体渗透压
C、尿量
D、血浆钠浓度
A、The accumulation of NaCl in the medullary interstitium depends on the active reabsorption of NaCl by the thick ascending limb
B、Countercurrent multiplication in the vasa recta helps to prevent washout of the medullary gradients of NaCl and urea
C、In the presence of ADH urea is reabsorbed from the inner medullary collecting ducts
D、The descending limb of the loop of Henle is permeable to water
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