Waec Model Questions Vol1 2023 Biology Question 6

Practice essay / theory question 6 from the 2023 Waec Model Questions Vol1 Biology examination. This question covers Excretion, Urinary system, Kidney physiology .

Waec Model Questions Vol1 2023 Biology Essay / Theory
Topics: Excretion Urinary system Kidney physiology
Question 6 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • essay
Waec Model Questions Vol1 2023 Biology Question 6 diagram

The diagram shows the major structures of the human urinary (excretory) system, including the kidney with a representative nephron, ureters, urinary bladder and urethra.

Question Parts

( a )
Label each of the numbered parts in the diagram with the correct anatomical term.
( b )
Describe the formation of urine in the nephron, covering the three principal processes.
( c )
A patient has a congenital defect that shortens the descending limb of the Loop of Henle. Predict how this defect will affect the concentration of the final urine and explain the physiological basis.
( d )
During intense exercise, a person loses 2.5 L of water through sweating. Assuming the kidneys continue to filter blood at a normal rate (≈180 L/day) and that the remaining body water is 38 L with an initial plasma osmolarity of 300 mOsm·kg⁻¹, estimate the new plasma osmolarity after the water loss, ignoring solute loss through sweat. Show all reasoning steps.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is Waec Model Questions Vol1 2023 Biology Question 6. It is one of the essay questions from the 2023 Waec Model Questions Vol1 Biology examination.

The question covers Excretion, Urinary system, Kidney physiology .

View More Waec Model Questions Vol1 2023 Biology Questions More Waec Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support