Learn about the digestive system here.
Much like sanitation workers who keep a city's water supply drinkable and dispose of its waste, the kidneys are usually unappreciated until there is a malfunction and "internal garbage" piles up.
The trillions of cells in the body require an abundant and continuous supply of oxygen to carry out their vital functions. We cannot “do without oxygen” for even a little while, as we can without food or water.
The heart, blood, and blood vessels are the major components of the cardiovascular system. Like the bustling factory, the body must have a transportation system to carry its various cargos back and forth, and this is where the cardiovascular system steps in.
Women have the responsibility of bringing forth life into the world, hence the creation and the function of the female reproductive system.
In cooperation with the women, men were also given the task of supplying generations upon generations of brethren for mankind’s race. They are also equipped with miracle-inducing parts that enable them to propagate with the woman and bring forth life into the world.