JAMB - Biology (1998 - No. 17)
The heart of the adult frog consist of
two auricles and two ventricles
one auricle and one ventricle
two ventricle and one auricle
one ventricle and two auricles
Wyjaśnienie
A frog has two auricles and one ventricle in its heart; meaning it has a three-chambered heart in total. Auricles are the upper chambers of the heart, while the ventricle is the lower chamber. Since frogs are amphibians, their hearts typically have two atria and one ventricle.
In summary, a frog's heart:
- Three chambers: Two auricles and one ventricle
- Incomplete double circulation: Due to the single ventricle, oxygenated and deoxygenated blood can mix slightly
- Amphibian characteristic: All amphibians have a three-chambered heart