The heart consists of 4 chambers - 2 atria and 2 ventricles. The smaller atria are about 1/3 the size and volume of the ventricles. The left ventricle is the largest chamber of the heart, with about 3 times more muscle mass than the right ventricle - both ventricles share a similar volume capacity. Due to the predominant size of the left ventricle, it is not surprising that 70% of all myocardial infarctions occur within the left ventricle. While the heart's chambers' primary purpose is to fulfill the mechanical function of pumping blood, other functions include influencing heart rate and serving several endocrine roles.
Dinosaurs, and especially theropod dinosaurs like T. rex were related to birds, which have a four-chambered heart. Mounting evidence suggests that dinosaurs were not sluggish like stereotypical reptiles but led active lives like birds and mammals. A four-chambered heart, which ensures more efficient circulation than a three-chambered heart, would have aided in sustaining such activity.
I am almost positive a dinosaur has a four chambered heart.
Reptiles have three or four chambered hearts. I looked it up and it said that and I also learned it at school in science.
Most reptiles have a three-chambered heart. A few types of reptiles have a four-chambered heart.
A crayfish has one heart that contains two chambers
There are four chambers in a human heart.
4 chambers as they are mammals.
A hippopotamus has a four-chambered heart.
It has 4 chambers in the human heart
It contains 4 chambers
the human heart contains four chambers and it is the ventricles (the two lower chambers) that do the pumping
4
A crayfish has one heart that contains two chambers
There are 4 chambers to the heart.
Their are 2 heart chambers.
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 heart contains 4 chambers The Right Atrium The Left Atrium The Right Ventricle and the Left Ventricle
Penguins have 4 chambers in their heart.
A shark heart has two chambers.
The bird's heart has 4 chambers.
The heart of fish have two chambers. The heart of reptiles and amphibians have three chambers. The heart of mammals have four chambers.