Answer: ventricles

AnswerCrossword Clue
VENTRICLESHeart chambers
ventriclesEach of the four connected fluid-filled cavities in the center of the brain
ventriclesVENTRICLE, either of the two muscular lower chambers of the heart, which pump the blood to the arteries and through the body also VENTRICULE, VENTRICULUS
ventriclesEach of the two main chambers of the heart, left and right
ventriclesA hollow part or cavity in an organ, in particular