6.3: Gas exchange in fish Flashcards
What does cavity mean?
Cavity means open space
There are how many gill filaments in each gill?
There are hundreds of gill filaments in each gill
There are hundreds of gill filaments in each gill and gill filaments are what?
There are hundreds of gills in each gill filament and gill filaments are stacked up
There are hundreds of gill filaments in each gill and gill filaments are stacked up.
Gill filaments are what?
Gill filaments are feather-like
There are hundreds of gill filaments in each gill and gill filaments are stacked up.
Gill filaments are feather-like.
There are lots of what on each gill filament?
There are lots of lamellae on each gill filament
There are hundreds of gill filaments in each gill and gill filaments are stacked up.
Gill filaments are feather-like.
There are lots of lamellae on each gill filament.
What do lamellae do?
Lamellae increase the surface area of the gills
Why do fish need an exchange surface?
Fish need an exchange surface, because they have a small SA:V ratio
Where do fish get their oxygen from?
Fish get their oxygen from the water
What is the exchange surface for fish called?
The exchange surface for fish is called gills
Fish have a what outer covering?
Fish have:
1. A waterproof
2. Therefore a gas-tight
outer covering
Fish have a waterproof and therefore a gas-tight outer covering.
Being relatively large, they also have a small SA:V ratio.
Their body surface is therefore not adequate to supply and remove their respiratory gases and so, like insects and humans, they have evolved a specialised internal gas exchange surface - gills.
Where are the gills located?
The gills are located within the body of the fish, behind the head
Fish have a waterproof and therefore a gas-tight outer covering.
Being relatively large, they also have a small SA:V ratio.
Their body surface is therefore not adequate to supply and remove their respiratory gases and so, like insects and humans, they have evolved a specialised internal gas exchange surface - gills.
The gills are located within the body of the fish, behind the head.
What are gills made up of?
Gills are made up of gill filaments
The structure of the gills:
The gills are located within the body of the fish, behind the head.
Gills are made up of gill filaments.
The gill filaments are stacked.
At right angles to the gill filaments are gill lamellae, which increase the surface area of what?
At right angles to the gill filaments are gill lamellae, which increase the surface area of the gills
The structure of the gills:
The gills are located within the body of the fish, behind the head.
Gills are made up of gill filaments.
The gill filaments are stacked.
At right angles to the gill filaments are gill lamellae, which increase the surface area of the gills.
Water is taken in through the mouth and forced where?
Water is taken in through the mouth and forced:
- Over the gills
- Out through an opening on each side of the body
The structure of the gills:
The gills are located within the body of the fish, behind the head.
Gills are made up of gill filaments.
The gill filaments are stacked.
At right angles to the gill filaments are gill lamellae, which increase the surface area of the gills.
Water is taken in through the mouth and forced over the gills and out through an opening on each side of the body, called what?
Water is taken in through the mouth and forced:
1. Over the gills
2. Out through an opening on each side of the body
,called the operculum flaps