Ventricle (heart)

Ventricle (heart)

In the heart, a ventricle is one of two large chambers that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs. The atrium (an adjacent/upper heart chamber that is smaller than a ventricle) primes the Pump. Interventricular means between two or more ventricles (for example the interventricular septum), while intraventricular means within one ventricle (for example an intraventricular block).

In a four-chambered heart, such as that in humans, there are two ventricles: the right ventricle pumps blood into the pulmonary circulation to/for the lungs, and the left ventricle pumps blood into the systemic circulation through the aorta (systemic circulation). (See Double circulatory system for details.)

Ventricles have thicker walls than atria and generate higher blood pressures. The physiologic load on the ventricles requiring pumping of blood throughout the body and lungs is much greater than the pressure generated by the atria to fill the ventricles. Further, the left ventricle has thicker walls than the right because it needs to pump blood to most of the body while the right ventricle fills only the lungs.

The mass of the left ventricle, as estimated by magnetic resonance imaging, averages 143 g ± 38.4 g, with a range of 87– - 224 g.

Read more about Ventricle (heart):  In Systole and Diastole

Other articles related to "heart, ventricle":

Ventricle (heart) - In Systole and Diastole - Dimensions
... The heartand its performance are also commonly measured in terms of dimensions, which in this case means one-dimensional distances, usually measured in millimeters ... Definition Normally End-diastolic dimension EDD The diameter across a ventricleat the end of diastole, if not else specified then usually referring to the transverse (left-to ... sometimes LVDD The end-diastolic dimension of the left ventricle ...