Relative to the local standard of rest, our Sun and the Earth are moving at about 43,000 miles per hour (70,000 km/hr) roughly in the direction of the bright star Vega in the constellation of Lyra. This speed is not unusual for the stars around us and is our milling around speed in our suburban part of the Galaxy.
Anatomy of the Heart Definitions. The heart is the size of your fist and it is located on the left side of your. chest. The heart is divided into four chambers. Right Atrium. The right atrium receives de-oxygenated blood from the body through the. superior vena cava (head and upper body) and inferior vena cava (legs and. lower torso).
The heart is a muscular organ that pumps blood to all the tissues in your body through a network of blood vessels. The right side of the heart pumps blood through the lungs where it picks up oxygen. The left side of the heart receives the blood containing oxygen and pumps the blood to the rest of your body. Your heart has four chambers and four valves that regulate blood flow: Left and right atria. Left and right ventricles.