There are four chambers in the human heart. There are two atria (the two upper chambers) and two ventricles (the two lower chambers).
4
It has 4 chambers in the human heart
There are four chambers in a human heart.
Any Human Heart has 503 pages.
four
The human heart has 4 sides.
4
all of them
Four
The average human heart beats at around 72 beats per minute.
4
A human heart has two atriums.