Ijmb Model Questions Vol1 2023 Biology Question 4

Practice essay / theory question 4 from the 2023 Ijmb Model Questions Vol1 Biology examination. This question covers Human Respiration, Structure and Function of Respiratory Organs, Respiratory Disorders .

Ijmb Model Questions Vol1 2023 Biology Essay / Theory
Topics: Human Respiration Structure and Function of Respiratory Organs Respiratory Disorders
Question 4 IJMB_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • essay

The diagram depicts the major structures of the human respiratory system.

Question Parts

( a )
Write the correct anatomical name for each labelled part (1‑8) shown in the diagram.
( b )
Describe, in sequential order, the pathway that air follows from the external environment to the site of gas exchange, indicating the specific function of each structure encountered.
( c )
Explain the mechanism of external respiration at the alveolar‑capillary membrane, including the role of partial pressure gradients and diffusion.
( d )
A patient has chronic obstructive pulmonary disease (COPD) that reduces the elasticity of the alveolar walls. Using the diagram, discuss how this pathology alters ventilation and gas exchange, and state two likely physiological consequences.

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About This Question

This is Ijmb Model Questions Vol1 2023 Biology Question 4. It is one of the essay questions from the 2023 Ijmb Model Questions Vol1 Biology examination.

The question covers Human Respiration, Structure and Function of Respiratory Organs, Respiratory Disorders .

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