Why do insects keep spiracles closed most of the time?
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Card 18
Front
How do gases move in and out of the tracheae along a diffusion gradient?
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Card 19
Front
cells during respiration which creates a diffusion gradient along the opposite direction. This causes CO2 to diffuse along the tracheoles and tracheae from the cells to the atmosphere
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Card 20
Front
How do gases move in and out of tracheae by mass transport?
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Card 21
Front
How does water in the ends of tracheoles aid gas exchange?
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Card 22
Front
tracheoles decreases in volume and in doing so draws more air into them. This means that the final diffusion pathway is a gas rather than a liquid so the diffusion is more rapid. This increases the rate at which air is moved into the tracheoles cont
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Card 23
Front
Give a limitation of the tracheal system
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Card 24
Front
Why is the body surface of a fish not adequate to supply and remove respiratory gases?
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Card 25
Front
What is the specialised exchange surface of the fish?
