The Human Gas Exchange System
- Gas exchange takes place in the human thorax. This is a collection of organs and tissues in the chest cavity
The main structures of the human gas exchange system
Thorax structures table
Exam Tip
Remember to pay attention to command words in exams, as they will be asking different things. For example, a question asking you to “Describe” the structure of the alveoli is different from a question asking you to “Explain” the structure of the alveoli.
“Describe” questions are asking you to give an account of something or to write events or processes in a logical order.
“Explain” questions are asking you to write why something happens or to link its structure to its function – as a result of this, “because” will be an important part of your answer.
