Lungs & Gas Exchange
This lesson covers:
- Why gas exchange is so important
- The structure of the lungs, including trachea, bronchi, bronchioles, and alveoli
- How alveoli are adapted for gas exchange
- How to calculate breathing rate
Which organ system are the lungs part of?
Respiratory system
Immune system
Reproductive system
Circulatory system
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Which letter indicates a single bronchus?
(The plural of bronchus is 'bronchi')
A
B
C
D
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Which letter indicates a single alveolus?
(The plural of alveolus is 'alveoli')
A
B
C
D
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Which letter indicates a single bronchiole?
(The plural of bronchiole is 'bronchioles')
A
B
C
D
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Which structures connect the bronchi to the alveoli?
Diaphragm
Oesophagus
Trachea
Bronchioles
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What are the tiny air sacs in the lungs called?
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What is the name of the process by which oxygen moves through the wall of the alveoli, into the blood?
Mass transport
Osmosis
Diffusion
Active transport
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How are alveoli adapted for efficient gas exchange?
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Which gas diffuses from the blood in the capillaries, into the air in the alveoli?
Oxygen
Carbon dioxide
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oxygen / carbon dioxide / hydrogen
passes down its concentration gradient from the alveoli, into the bloodstream.
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Which substance inside red blood cells does oxygen bind to?
Haemoglobin
Insulin
Antibodies
Urea
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True or false? Carbon dioxide is transported around the body dissolved in the blood plasma.
True
False
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A boy has a breathing rate of 14 breaths per minute. How many breaths will he take in 30 seconds?
breaths
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While running for 5 minutes, a woman takes 115 breaths.
What is her breathing rate for the 5 minute period?
breaths/min
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