Neco 2023 Biology Question 4

Practice essay / theory question 4 from the 2023 Neco Biology examination. This question covers Respiration, Human physiology .

Neco 2023 Biology Essay / Theory

Topics: Respiration Human physiology

Question 4 NECO • 2023 • BIOLOGY • essay

The diagram shows the major structures of the human respiratory system, including the nasal cavity, pharynx, larynx, trachea, primary bronchi, bronchioles, alveolar sacs, diaphragm and the rib cage.

( a )

Describe, in order, the pathway that air follows from the external environment to the site of gas exchange.

( b )

Explain the structural adaptations of the alveoli that facilitate efficient external respiration.

( c )

Discuss the role of the diaphragm in the mechanics of ventilation, including how its movement changes thoracic volume and pressure.

( d )

Compare external respiration with internal respiration, highlighting the key differences in location, gases involved and the direction of diffusion.

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This is Neco 2023 Biology Question 4. It is one of the essay questions from the 2023 Neco Biology examination.

The question covers Respiration, Human physiology .

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