The hearts system is really the circulatory system which pumps blood around the body to keep you going. It is made up of different parts:
Without these you will die.
Circulatory.
The game titled Kingdom Hearts is for the Playstation 2 system, although the series of Kingdom Hearts is for many systems, including the DS, PSP and cell phone.
Kingdom Hearts Birth by Sleep is for the PSP.
Kingdom Hearts 1 is for the PlayStation 2 or PS2.
The Five aortic arches serves as hearts.
PlayStation 2
Kingdom Hearts is only for the Sony PlayStation 2 entertainment system/
Well, according to the kingdom hearts wikipedia, the system that kingdom hearts 3 358/2 Days is coming out for is the Nintendo ds, but if you are asking about Birth by Sleep, it's the PSP. -Cloudxtifa fan =3
closed circulatory system and a series of hearts
Cell phone
the hearts scare system is a layer of liquid fear, exercise ,gyms,ect. break this layer of liquid protecting the heart! weird, huh?
The Psp. i know that sucks.