Respiratory system

Respiratory system2018-10-20T11:06:19+10:00

The respiratory system is the third dot point under “How do the musculoskeletal and cardiorespiratory systems of the body influence and respond to movement?” for Body in Motion. The respiratory system refers to the set of organs that allows a person to breath (air in and out). This includes the: nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and alveoli.

These organs combine to allow for the exchange of oxygen and carbon-dioxide between the air in your lungs and your blood. It is this exchange that allows not only for movement to occur at various intensities, but also to sustain life.

For this dot point you will learn not just the structure, but also the function of the respiratory system along with how gas is exchanged both externally and internally. You will also participate in various practical activities where you monitor the response of this system to physical activity and learn to explain why these changes occur in relation to contributing to movement efficiency.

The respiratory system is clearly connected with the circulatory system and should be considered together. Together they are often called the cardiorespiratory or cardiovascular system. This is because both systems on their own are insufficient to understanding movement and in the maintenance of life.

The Preliminary PDHPE syllabus tells you that you need to:

Learn about:

  • respiratory system
    • structure and function
    • lung function (inspiration, expiration)
    • exchange of gases (internal, external)

Learn to:

  • analyse the various aspects of lung function through participation in a range of physical activities

Practice questions

Label the diagram on the right using the correct terms (*note – you only need to label numbers 5-10 for this question). 3 marks

Describe the exchange of gases in the respiratory system and how that contributes to movement efficiency. 4 marks

Explain the respiratory system’s response to movement. Use examples. 6 marks