Because the net weight of the fluid in the blood is bigger, because the bigger size of the lower chambers (ventricles) allows more blood to accumulate in there, thus causing the need for thicker walls
The lower chambers of the heart are the ventricles. In contrast, the upper chambers are the atria.
The ventricles are the lower chambers of the heart. The atria are the upper chambers.
The lower chambers of the heart have a different function than the upper chambers. The lower chambers pump the blood out of the heart into the body and lungs.
The heart is divided into four chambers. The two bottom heart chambers are called the ventricles. The upper chambers are the atrials.
The heart has upper and lower chambers.
The ventricles are the lower chambers of the heart. The atria are the upper changes.
The lower heart chambers are ventricles. Atria are the upper chambers of the heart.
The two upper chambers of the heart are called the atria. They receive blood from the body and the lungs and help to pump it to the lower chambers of the heart.
Yes, a human heart has four chambers. The atria are the upper chambers, and the ventricles are the lower chambers.
The atria are the upper chambers of the heart on both the right and left sides. The ventricles are the lower chambers.
False. The interatrial septum separates the upper chambers of the heart, while the interventricular septum separates the lower chambers of the heart.
The human heart has four chambers. The atria are the upper chambers, and the ventricles are the lower chambers.