I'm unsure of what you mean by slits... I assume you mean either the different chambers or the valves.
The heart is divided into chambers as to allow the oxygenated blood and the deoxygenated blood to stay separated. As well, the different chambers in the heart give the heart two distinct sides, which beat one after another giving us the 'Da-dum' heartbeat that we're so used to.
The valves help to ensure the blood flows in only one direction in the heart. :]
There is also the septum, which is the big divider in your heart - which would be used to created the different chambers. :]
A small amout of cake
The Slits was created in 1976.
The Slits ended in 1982.
by the gill slits
it means slits it means slits
A leopard shark has 5 pairs of gill slits, for a total of 10 gill slits.
Return of the Giant Slits was created in 1981.
All chordates embryos have pharngeal slits.
I saw the whole thing through the slits in the fence. The piece of meat had slits across the surface.
The slits are simply called arrow slits or occasionally Balistraria. Sometimes the arrow slits are looking out of embrasures. Arrow slits were useful for protecting the castle as they were easy to fire out of but very, very hard to fire into. To find out more about embrasures click on the link below. "Wikipedia.org: Embrasure" To find out more about arrow slits click on the other link below. "Wikipedia.org: Arrow slits".
winsor castle had 500000000000000000000000000000000000000000000000000000000000000000000000000000000000000009 arrow slits.
The side slits stand for a deep ocean trench.