Ijmb Model Questions Vol1 2017 Biology Question 6

Practice essay / theory question 6 from the 2017 Ijmb Model Questions Vol1 Biology examination. This question covers Excretion, Renal physiology, Nephron function .

Ijmb Model Questions Vol1 2017 Biology Essay / Theory
Topics: Excretion Renal physiology Nephron function
Question 6 IJMB_MODEL_QUESTIONS_VOL1 • 2017 • BIOLOGY • essay

A physiology lecturer is reviewing the mechanisms by which the human kidney eliminates metabolic waste and maintains fluid balance.

Question Parts

( a )
Describe the structural organisation of a nephron and the principal functions of its main regions (glomerulus, proximal tubule, loop of Henle, distal tubule and collecting duct).
( b )
Given a glomerular filtration rate (GFR) of 120 mL min⁻¹, a plasma protein concentration of 7 g dL⁻¹ and an oncotic pressure of 25 mmHg, explain how Starling forces determine the net filtration pressure across the glomerular capillary wall.
( c )
A patient’s urine osmolality is 800 mOsm·kg⁻¹ while plasma osmolality is 300 mOsm·kg⁻¹. Discuss the role of antidiuretic hormone (ADH) in achieving this concentration difference and the renal tubular mechanisms involved.

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About This Question

This is Ijmb Model Questions Vol1 2017 Biology Question 6. It is one of the essay questions from the 2017 Ijmb Model Questions Vol1 Biology examination.

The question covers Excretion, Renal physiology, Nephron function .

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