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Gas exchange, ventilation and exercise

Organisation in animals and plants · Lesson 3 of 5

Lesson 3 of 5

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Lesson 3 of 5 · Organisation in animals and plants

Gas exchange, ventilation and exercise

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Describe the structures of the human gas exchange system, including trachea, bronchi, bronchioles, alveoli, ribs, intercostal muscles and diaphragm.
Explain how alveoli and the surrounding capillaries are adapted for efficient gas exchange, including large surface area, moist surface, thin walls and good blood supply.

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Explain the effects of exercise on breathing rate, breathing depth, heart rate and oxygen delivery to working muscles.

Describe aerobic respiration and anaerobic respiration in muscles during vigorous exercise, and explain oxygen debt, lactic acid production and recovery.

Interpret and evaluate data about lung function, ventilation, exercise and the effects of smoking or other respiratory disease where included in the specification.

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