Ijmb Model Questions Vol1 2020 Biology Question 4

Practice essay / theory question 4 from the 2020 Ijmb Model Questions Vol1 Biology examination. This question covers respiration .

Ijmb Model Questions Vol1 2020 Biology Essay / Theory

Topic: respiration

Question 4 IJMB_MODEL_QUESTIONS_VOL1 • 2020 • BIOLOGY • essay

The diagram shows the human respiratory system with the structures labelled A–I.

Question Parts

( a )

Write the correct anatomical name for each labelled structure (A–I).

( b )

Describe, in order, the pathway that air follows from entry into the body to the site of gas exchange.

( c )

Explain the mechanism of gas exchange at the alveolar–capillary interface, mentioning the roles of partial pressure gradients and diffusion.

( d )

Discuss how the respiratory centre in the medulla adjusts the rate and depth of breathing during moderate exercise, linking your answer to the structures shown in the diagram.

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About This Question

This is Ijmb Model Questions Vol1 2020 Biology Question 4. It is one of the essay questions from the 2020 Ijmb Model Questions Vol1 Biology examination.

The question covers respiration .

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