[Unit 6.3] | Gas Exchange In Fish Flashcards
1
Q
Describe the structure of the gills.
A
• Vonsists of a gill bar
• With many projections called gill filaments which are stacked in a pile.
• Gill lamellae are discs that exist at right angles to the filaments & increase the surface area of the gill.
2
Q
What is a countercurrent flow?
A
• Where blood & water flow over the gill lamellae in opposite directions.
3
Q
Describe the process of ventilation within a fish.
A
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