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
Dolores (given name) Dolores (given name) Dolores is a feminine given name of Spanish origin. In an etymological sense, the name Dolores from the Spanish word "dolores", which is the plural form of "dolor", meaning either sorrow or pain, and word can be traced even further back, into Latin. However, the usage of Dolores as a given name has its origins in the strong influence that the Roman Catholic Church has on Spain and, by extension, Spanish-speaking countries. The name is a reference to Nuestra Señora de los Dolores, one of the many titles of Mary, Mother of Jesus, typically translated to Our