Both! Blood enters the atria (upper chambers) on both sides of the heart at the same time. Blood from the body, carrying carbon dioxide, enters the right atrium. Blood from the lungs, carrying oxygen, enters the left atrium. The two atria contract together, pumping the blood into the two ventricles (lower chambers). The ventricles then contract, pumping blood out of the heart. Blood from the right ventricle goes to the lungs, where it loses its carbon dioxide and picks up oxygen. It then goes to the left atrium. Blood from the left ventricle goes to the body, where it delivers oxygen and picks up carbon dioxide. See: http://www.bbc.co.uk/science/humanbody/body/factfiles/heart/heart.shtml
The blood in the right side of the heart is deoxygenated, coming from the body, while the blood in the left side is oxygenated, coming from the lungs after gas exchange. The right side pumps blood to the lungs for oxygenation, while the left side pumps oxygenated blood to the rest of the body.
Deoxygenated blood is carried to the right side of the heart. This blood has returned from the body and is low in oxygen content, ready to be pumped to the lungs for oxygenation.
The blood in the left side of the heart has more oxygen and less carbon dioxide compared to the blood in the right side. This is because oxygenated blood from the lungs enters the left side of the heart, which is then pumped out to the rest of the body. In contrast, deoxygenated blood from the body enters the right side of the heart and is pumped to the lungs to release carbon dioxide and pick up oxygen.
The septum separates the two sides of the heart into the left and right chambers. The left side of the heart receives oxygenated blood from the lungs and pumps it out to the rest of the body, while the right side receives deoxygenated blood from the body and pumps it to the lungs for oxygenation.
Systemic circulation is the part of the cardiovascular system that carries oxygen-rich blood from the heart to the body and returns oxygen-depleted blood back to the heart. Pulmonary circulation, on the other hand, is the circulation of blood between the heart and lungs, where blood picks up oxygen and releases carbon dioxide. Systemic circulation follows pulmonary circulation in the blood flow cycle.
Body
The right.
to the rest of the body to supply blood for daily activities
The right side of the heart pumps blood to the lungs, and the left side pumps blood to the rest of the body. The blood on the right side is deoxygenated and the blood on the left side is oxygenated.
To the left side of your heart.
the right side of the heart contains deoxygenated blood.
The left side of the heart supplies blood to the body through the aorta, the largest artery in the body. The right side of the heart sends blood to the lungs for oxygenation.
The left side of the heart pumps oxygenated blood out to the body.
The right side of the heart receives blood from the body. The left side receives blood from the lungs.
The left side of the heart contains oxygen-rich blood. The right side of the heart contains deoxygenated blood.
The left side of the heart pumps oxygenated blood throughout the body.
Blood in the left side of the heart is redder because it is carrying oxygen.