How is the difference in the walls of the atria and ventricle related to the different functions of the atria and ventricle?

The atria are thin-walled sacs that receive blood from the body or lungs, while the ventricles have a thick muscular wall because they must pump the blood with greater pressure than the atria.

Explanation:

In the human heart, the atria and ventricles are responsible for handling blood and have different structures and function.

The atria are thin-walled sacs located at the top of the ventricles and their function is to receive the blood that comes from the whole body —right atrium— or from the lungs —left atrium— to pass it to each ventricle through the atrioventricular valves, which does not require much pressure. On the other hand, the walls of the ventricles are made up of a thick layer of muscular tissue, since the pressure with which they must pump the blood -towards the lungs or to the entire organism- is greater than that of the atria.

The structure of each chamber of the heart is configured to be able to fulfill the specific function that they possess.

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