What are the most reliable systems in the human body?

Nothing never goes wrong, but the reproductive system is the only one that won't kill you if it malfunctions. That's pretty much it. read more

The main systems of the human body are: Circulatory system Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away. read more

There are three basic types of levers: first class, second class and third class;from which the third class lever is most comman in human body. First class lever found in humans is present between the joint of skull and vertebral column which allows the movement of our head. read more