The human gas exchange system and breathing
I can describe how humans breathe, including the roles of different parts of the gas exchange system.
The human gas exchange system and breathing
I can describe how humans breathe, including the roles of different parts of the gas exchange system.
Lesson details
Key learning points
- The structures and functions of the gas exchange system in humans.
- The mechanism of breathing, including the role of muscles, to move air in and out of the lungs.
- A pressure model to explain the movement of gases during breathing.
Common misconception
Thinking that the heart is part of the gas exchange system, linked to the lungs by "air tubes".
This lesson explores the organs that make up the gas exchange system and how air is moved into and out of the lungs,
Keywords
Gas exchange system - The human gas exchange system is a group of organs that work together to enable us to breathe.
Pressure - The molecules of a gas in a container collide with the walls of the container and this creates pressure.
Volume - The volume of a gas is the amount of 3D space it fills.
Inhalation - Breathing in is called inhalation.
Exhalation - Breathing out is called exhalation.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
A group of tissues working together.
A group of organs working together.
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The building blocks of living organisms.
Exit quiz
6 Questions
