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
Christos (given name) Christos (given name) Christos is a common Greek given name. In Greek, it may be spelled Χρίστος ("Chrístos") or Χρήστος ("Chrēstos"), which are pronounced identically ("cf." iotacism). The Greek name Χρίστος is derived from the earlier word χριστός (note the difference in accentuation), meaning "anointed" and which became the Christian theological term for the Messiah. The spelling of the Greek name Χρήστος suggests a derivation from the word χρηστός, which in earlier forms of the language principally meant "useful", and in modern Greek means "ethical, righteous, good, just, upright, virtuous". It is more likely, however that the form Χρήστος is