Oxygenated and deoxygenated blood do not get mixed up inside the heart because the heart was designed to keep these separate. This is why the heart is so complex.
Oxygenated
Firstly ,Heart pumps deoxygenated coming from body, to the lungs and then the deoxygenated blood turns to oxygenated inside the lungs and after that it comes back to heart . After this, heart again pumps those oxygenated blood coming from lungs, to the body parts .So iIf there would be only one pump system then heart would be as hollow and all the deoxygenated and oxygenated blood would be mixed up inside the heart.
The structure in the heart that separates oxygenated blood from deoxygenated blood is the atria. These are the two sides of the heart and are separated by the interatrial septum.
Deoxygenated blood travels away from the heart to the lungs, where it picks up oxygen and becomes oxygenated.
All blood is red, regardless of where it is in the body. Oxygenated blood and deoxygenated blood have slightly different shades, with deoxygenated blood being darker and oxygenated blood brighter.
In the main, except from the pulmonary artery and vein. The pulmonary artery carries deoxygenated blood from the heart to the lungs and the vein carries oxygenated blood from the lungs to the heart.
Veins carry deoxygenated blood from the tissues and organs to the heart. Arteries are the means for carrying the oxygenated blood.
The right heart chambers (atrium and ventricle) contain deoxygenated blood. The left heart chambers contain oxygenated blood, since this blood has already been through the pulmonary system.
The deoxygenated blood and the oxygenated blood would mix.
It stops the deoxygenated blood from mixing with the oxygenated blood in the heart
The blood passing into the frogâ??s aortic arches is a mixture of both the deoxygenated blood from the right atrium and the oxygenated blood from the left atrium. This mixture contains enough oxygen to supply the needs of the rest of the body.
Pulmonary vein carries oxygenated blood from lungs to heart