Ventricle (heart)
![](/Images/godic/202501/14/Heart_diagram-en.svg4743.png")
![Heart section showing ventricles and ventricular septum](/Images/godic/202501/14/Gray4984743.png")
![Wiggers diagram of various events of a cardiac cycle, showing left ventricular volume as a red trace.](/Images/godic/202501/14/Wiggers_Diagram.svg4743.png")
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 the ventricles (for example the interventricular septum), while intraventricular means within one ventricle (for example an intraventricular block).