Deoxygenated.
Oxygen.
When blood flows into the right atrium, it has little oxygen and is rich in carbon dioxide, as it has just returned from the body's tissues. This deoxygenated blood is collected from the superior and inferior vena cavae. The right atrium then contracts to push the blood into the right ventricle, which subsequently pumps it to the lungs for oxygenation.
When blood flows to the right atrium from the body, it contains deoxygenated blood, which is low in oxygen and high in carbon dioxide. This blood returns via the superior and inferior vena cavae after circulating through the body, delivering oxygen and nutrients to tissues. The right atrium then pumps this deoxygenated blood into the right ventricle, which sends it to the lungs for oxygenation.
a little of blood and a lot of carbon dioxide
As deoxygenated blood returns from the body, it flows from the vena cava into the right atrium. From the right atrium the blood flows into the right ventricle which pumps the blood through the pulmonary artery to the lungs. Oxygenated blood returns from the lungs via the pulmonary vein and enters the left atrium. The left atrium empties into the left ventricle which pumps the blood through the aorta and to the body.
The Deoxygenated blood flows from the body into the right atrium. Oxygenated blood from the lungs flows into the left atrium. Since frogs have only one ventricle, the oxygenated and deoxygenated blood mixes in the ventricle. From there, blood flows into the truncus arteriosus that contains a spiral valve to separate and lead the blood out into the body.
Blood that flows into the right atrium is returning from the body and is deoxygenated. This means that it contains less oxygen and mostlycarbon dioxide.
There are many section in the heart, starting with: The Superior Vena Cava, where de-oxygenated blood flows in from the body. From there the blood flows into the Right Atrium, through the Tricuspid Valve and into the Right Ventricle. After the blood is in the Right Ventricle, the blood flows out of the heart through the Inferior Vena Cava and in to the lungs, where it can be oxygenated. Once oxygenated, the blood flows back into the heart through the Pulmonary Artery. From the Pulmonary Artery the blood flows into the Left Atrium, through the Mitral Valve and into the Left Ventricle. From there the blood flows through the Pulmonary Valve to the Aorta and out into the body. The process then starts over from there.
a little oxygen and a lot of carbon dioxide
a little oxygen and a lot of carbon dioxide
When the left ventricle contracts, blood flows into the aorta. This oxygen-rich blood is then distributed throughout the body to supply organs and tissues. After delivering oxygen, the deoxygenated blood returns to the heart, entering the right atrium.
The right atrium receives "de-oxygenated" blood (blood from the body containing less oxygen and more carbon dioxide) and the right ventricle sends this blood toward the lungs.