Exchange Surfaces Flashcards
How do fish preform gas exchange
Counter current exchange
Where does counter current happen in fish
Gills
How do plants preform gas exchange
Through the stomata
What muscles are involved with human breathing (not the diaphragm)
Intercostal muscles
What are the two parts of gills
Gill filaments
Gill lamellae
What is counter current exchange
When blood and water flow through the gill in opposite directions to each other
Why is a counter current used instead of a same current
To maintain a steep concentration gradient
Why can fish not survive out of water
Unable to do gas exchange
(their gills also stick together as there is no water to hold them apart)
As an organism gets larger what happens to it’s surface area to volume ratio
It decreases
The larger the organism, what happens to it’s metabolic rate
A higher metabolic rate
A small organism has what surface area to volume ratio and what metabolic rate
Large SA:Vol ratio
Small metabolic rate
What structures are used in human gas exchange
Alveoli
Bronchioles
Bronchi
Trachea
Lungs
What is the equation for ventilation rate (technically Pulmonary VR)
PVR = tidal volume X breathing rate
