Urine Concentration and Dilution; Regulation of Extracellular Fluid Osmolarity and Sodium Concentration

Physiology, MBBS Second Year. This chapter is split into 8 topics and has 374 practice questions. The topics covered are listed below, followed by 10 free sample questions from the chapter.

Topics in this chapter

Urine concentration & dilution: segment-by-segment 49 questions
ADH mechanism & regulation 49 questions
Countercurrent mechanism: loop of Henle 48 questions
Vasa recta & medullary blood flow 41 questions
Urea recycling 41 questions
Obligatory urine volume & sea water 45 questions
Thirst, salt appetite & disorders of water balance 54 questions
Plasma osmolarity estimation & hormonal roles 47 questions

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