📌 The respiratory organs of vertebrates are adapted to the environment in which the animals live.
O₂ enters, CO₂ leaves
Fish have gills located in the gill arches.
Fish take in oxygen and release carbon dioxide through the gill lamellae.
📌 Amphibian larvae breathe with gills, whereas adult amphibians breathe through the skin or lungs.
Larval amphibians use gills; adults use skin or lungs
★ Must-know
📌 Amphibians, reptiles, birds, and mammals have lungs, whereas fish have gills.
The respiratory passages consist of:
Birds have the most efficient respiratory system, assisted by air sacs.
Further detail
Nostrils → larynx → trachea → bronchioles → lungs
1. What is the primary exchange performed by the vertebrate respiratory system?
2. Why do vertebrate respiratory organs differ among animal species?
3. Where are the gills of a fish located?
What does the vertebrate respiratory system take in?
Oxygen (O₂).
What does the vertebrate respiratory system eliminate?
Carbon dioxide (CO₂).
How are vertebrate respiratory organs adapted?
They are adapted to the environment where the animals live.
Where are fish gills located?
In the gill arches.
Through which structures do fish exchange oxygen and carbon dioxide?
The gill lamellae.
How do amphibian larvae breathe?
With gills.
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