Its the Left Atrium and the Left Ventricle
hearts with septal defects (holes between pumping chambers)
We humans have one heart with four pumping chambers.
The upper chambers are called atria, singular atrium. The bottom chambers are called ventricles, singular ventricle.
Four chambers i think
Human beings, and mammals in general, have a certain type of heart, with four sections, called chambers. A chamber that receives blood is called an atrium (they were once called auricles), and a chamber that pumps blood is called a ventricle. Two chambers serve the function of receiving blood from the lungs and pumping blood to the lungs, and two other chambers receive blood from the rest of the body and pump blood to the rest of the body. Ambhibians and reptiles have a three chambered heart. Their hearts have only three sections, and their circulatory system is therefore somewhat simpler than that of mammals, and somewhat less efficient.
Octopuses have three hearts Two are used for pumping blood to the octopuses gills and the other is used for pumping blood to the rest of the body.
Plants do not have hearts. Only animals have hearts and most have four chambers and a few have three.
Human and mammalian hearts have 4 chambers .
Fish hearts have 2 main chambers: the atrium and the ventricle. Fish have the simplest hearts of all the vertebrates.
The human heart has four chambers.The upper two chambers are called Atria and the lower two are called Ventricles
atrium
The term "chamber" is absolutely applicable to science. Portions of animal hearts are divided into so called "chambers." The human heart is comprised of four chambers. The heart of a fish is made up of three chambers.