-Name a vertebrate that has a 4-chambered heart -A hummingbird would be one good example of a vertebrate that has a four chambered heart.
buffer zone of the heart
yes, it's a safety Yes.
The atria are chambers that receive blood that returns to the heart.
Mammals, birds, and crocodilians have a four-chambered heart.
it is the receiving and giving area of the heart, goes in 1 side come out of the other
located superiorly and are the receiving chambers of the heart
Each zone is 20 meters in length. A runner's body may be out of the zone, but the hand receiving the baton must be within the zone.
i think its the ventricles
all the valves
Atria receive blood into the heart and ventricles "discharge" it from the heart
The Atria