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A crocodile has a four-chambered heart.
Fish hearts have two chambers, one atrium and one ventricle. They draw in deoxygenated blood in a single atrium, and pump it out through a ventricle.
the amphibians have three chambered heart while reptiles have also three chambered heart but only crocodile contain four chambered heart. the blood mix up with each other of two sorts
The heart of a fish is a two chambered heart, having only one atrium and one ventricle.
All mammals have a four chambered heart. Most reptiles have a three chambered heart, with the exception of the crocodile which has four.
a crocs bite is quite a bit stronger (20% I think) to a comparative gator. because of the crocs more narrow snout it has less surface area then an alligator. This may also be true not only because of surface area but because crocodiles can more easily dish out more energy at any given moment due to the fact that they have a four-chambered heart which operates much more efficiently than an alligator's three-chambered heart. (this is also why alligators seem less agile and less aggressive, they just don't have the ability to function with efficiency when blood flows too quickly through the heart.
The oxygenated and deoxygenated blood mixes
There are few benefits to a 3 chambered heart, a 4 chambered heart is more effective.
no all mammals do not have 3 chambered heart..... only few have 3 chambered heart
Grasshoppers have an open circulatory system that contains a heart with 4 chambers. Unlike a human's 4 chambered heart, the grasshopper's heart pumps the blood to their head where it flows openly through their body.
The Four-Chambered Heart was created in 1950.
All mammals have a four chambered heart.