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
Logan (given name) Logan (given name) The given name Logan is derived from the Scottish surname "Logan", which is in turn derived from a place name. The likely origin of this surname is a place located near Auchinleck, in Ayrshire. The place name is derived from the Scottish Gaelic "lagan", which is a diminutive of "lag", which in turn means "hollow". The given name is borne by males and females. The given name was the 17th most popular name for baby boys born in the United States in 2007 and was the 455th most popular name for baby girls born there in 2007.