Gas exchange in humans — Easy
Recall and familiar applications. Optional hints help you find a first step.
Includes extension practice
Breathing-system identification, exchange-surface features and activity measurements are required. Inspired/expired-air comparisons, ventilation pressure mechanics, cartilage, cilia and detailed breathing control extend this course.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge 0653 syllabus2028–2029 · B11.1.1–3
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