Question

What is largely responsible for the control of large scale movements, as well as smaller, more precise movements of the body.?

Answer 1

The one that is largely responsible for the control of large scale movement, as well as smaller more precise movements of the body is :
The nervous system
The way this works is the nervous system will send some sort of signal through the nerves and transmit impulses between different path of  your body

Answer 2

The nervous system is the one that is largely responsible for all kind of movement in humans.