Heart and along the conduction system of the heart. The heart receives blood low in oxygen from the systemic circulation, which enters the right atrium from the superior and inferior venae cavae and passes to the right ventricle. From here it is pumped into the pulmonary circulation, through the lungs where it receives oxygen and gives off carbon dioxide. Oxygenated blood then returns to the left atrium, passes through the left ventricle and is pumped out through the aorta to the systemic circulation−where the oxygen is used and metabolized to carbon dioxide. The heart beats at a resting rate close to
Brandon (given name) Brandon (given name) Brandon is a masculine given name which originates from two or possibly three separate sources, two Celtic, the other, Anglo-Saxon, and has historically been used by these different cultures independently. Today, most people with the name do not have any connection or lineage with any of these sources and use them as if they were the same name. In the instances of the Celtic origins, it is either a variant of the Irish masculine given name, Breandán, or descended from the Old Welsh name Brân, meaning "crow". The Anglo-Saxon origin is the surname "Brandon". The given name