Neco Model Questions Vol1 2024 Biology Question 4

Practice essay / theory question 4 from the 2024 Neco Model Questions Vol1 Biology examination. This question covers respiration, human anatomy, gas exchange .

Neco Model Questions Vol1 2024 Biology Essay / Theory
Topics: respiration human anatomy gas exchange
Question 4 NECO_MODEL_QUESTIONS_VOL1 • 2024 • BIOLOGY • essay
Neco Model Questions Vol1 2024 Biology Question 4 diagram

The diagram shows the major structures of the human respiratory system with the labels indicated.

Question Parts

( a )
Identify the structures labelled A–H in the diagram.
( b )
Explain the process of external respiration, describing how oxygen and carbon dioxide are transferred between the alveolar air and the blood. In your answer, refer to at least three labelled structures from the diagram.
( c )
During vigorous exercise a person’s tidal volume rises from 0.5 L to 1.5 L per breath and the respiratory rate increases from 12 to 30 breaths per minute. (i) Calculate the change in minute ventilation (in litres per minute). (ii) Discuss how the diaphragm (label H) and the intercostal muscles contribute to achieving the increased tidal volume, referring to the diagram where appropriate.

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About This Question

This is Neco Model Questions Vol1 2024 Biology Question 4. It is one of the essay questions from the 2024 Neco Model Questions Vol1 Biology examination.

The question covers respiration, human anatomy, gas exchange .

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