Starter quiz
- What is the scientific name for the windpipe?
- 'trachea' ✓
- Which measurements do you need to calculate breathing rate?
- number of breaths ✓
- pulse
- time ✓
- volume of air
-
- Exercise will ______ breathing rate.
- 'increase' ✓
Which image shows a mitochondrion?- A
- B
- C ✓
-
The surface area of the rectangle is ______ cm².- '168' ✓
- If the volume of a box gets smaller, the pressure inside will ...
- increase ✓
- decrease
- stay the same
-
Exit quiz
- True or false? The small air sacs found in the lungs are known as bronchioles.
- True
- False ✓
- What are the rings around the trachea made from?
- bone
- muscle
- cartilage ✓
-
- During ______ the intercostal muscles and diaphragm contract.
- 'inhalation' ✓
What do alveoli have to maintain a concentration gradient?- a good blood supply ✓
- large surface area
- a high temperature
-
- The lungs need to excrete ______ as it is a waste product of respiration.
- 'carbon dioxide' ✓
Put the statements in the right order to describe inhalation.- 1⇔the intercostal muscles contract
- 2⇔the ribcage moves upwards and outwards and the diaphragm contracts and flattens
- 3⇔volume increases
- 4⇔pressure decreases
- 5⇔air moves in
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Why oxygen needs to be absorbed into, and carbon dioxide needs to be removed from, the human body.
- The function and structures of the lungs in healthy humans.
- The mechanism of breathing, including the role of muscles, to move air in and out of the lungs.
- Adaptations of healthy lungs that increase the amount of gas exchange.
- Detailed structure of the alveoli in healthy human lungs.
Common misconception
Believing that we need oxygen to breathe.
We breathe to get oxygen into our bodies so cells can use it as fuel for respiration.
Keywords
Gas exchange - The process of oxygen diffusing from the lungs into the blood, and carbon dioxide diffusing from the blood to the lungs.
Breathing - The process in which air moves in and out of the lungs.
Ventilation - Movement of air in and out of the lungs.
Lungs - A pair of organs in the respiratory system of humans, and many animals, that provide a gas exchange surface for oxygen and carbon dioxide.
Alveoli - Tiny air sacs in the lungs that carry out gas exchange.
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