12 Questions
Which group of animals has a 3-chambered heart with two atria and a single ventricle?
Amphibians and reptiles (except crocodiles)
What is the primary difference between open and closed circulatory systems?
The flow of fluid through open spaces or a closed network of blood vessels
What do all vertebrates possess?
A muscular chambered heart
In which type of circulatory system is the flow of fluid more precisely regulated?
Closed circulatory system
What is unique about the circulatory system of birds and mammals?
Oxygenated and deoxygenated blood do not get mixed up
What is the primary function of the gills in fishes?
To oxygenate deoxygenated blood
In which type of circulatory system do blood vessels merge into open spaces or body cavities?
Open circulatory system
What is the primary function of the atrium in the heart of vertebrates?
To receive oxygenated blood from the gills/lungs/skin
What is common to the circulatory systems of amphibians and reptiles?
Incomplete double circulation
What is the significance of the single ventricle in the heart of amphibians and reptiles?
It allows for mixing of oxygenated and deoxygenated blood
What is the difference between the circulatory systems of fishes and birds/mammals?
Separation of oxygenated and deoxygenated blood
What is the characteristic of the heart of annelids and chordates?
Closed network of blood vessels
Learn about the two types of circulatory patterns in animals: open and closed. Understand the differences between them and their presence in various species. Test your knowledge of blood circulation and its importance in living organisms.
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