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What is the irregular muscular elevations on the internal surface of both ventricles?
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The internal wall surface of each ventricle displays large smooth irregular muscular ridges called?
pectinate muscles
What are fingerlike muscular projections from the ventricles?
papillary muscles
What is the name of the cone-shaped muscular pillars in the ventricles?
Papillary Musles
A muscular wall between the left and right ventricles?
The interventricular septum separates the left and right ventricles. This muscular wall prevents the mixing of oxygen-rich and oxygen-poor blood.
Why would the ventricles need to be strong?
The ventricles have to be firmer and more muscular because they have to pump blood much further than the atria.
In the human heart the muscular structure of the ventricles enables them to?
Pump blood directly to the atria.
What is difference between auricle and ventricle?
uricles are part of the atria and serve to increase the volume of the atria. The atria that they are a part of serve to direct blood into the ventricles and are not very muscular. The ventricles are far more muscular than the atria and serve to pump blood to either the lungs or the rest of the body ( the right and left ventricles respectively).
In longitudinal section how do the walls of the atria and ventricles differ?
In longitudinal section, the walls of the atria are thinner, and lined with pestinate muscles. The walls of the ventricles, meanwhile, are thick and muscular.
The muscular nature of the walls of ventricles is most closely associated with their function of?
3) maintaning
What is the name of the muscular ridges in the ventricles?
Trabeculae Carneae.
Why do ventricles have thicker muscular valves than atrium?
The walls of the ventricles of the heart aren't thinner than the atria, they are thicker. This is because they require more power as they pump blood around the body, while the atria only pump blood the short distance into the ventricles. More muscular walls are therefore needed to provide this power which is why they are thicker. The left ventricle is even thicker than the right ventricle as it requires a lot more power to pump blood all around the body. The right ventricle only pumps blood to the lungs.
What does the interventricle septum do?
It is a thick muscular septum, which divides the two cardiac ventricles. It also transmits the signal for contraction of ventricular muscles through 'Bundle of HIS'.
