Question

Which hormone has direct impact on urination

Answer 1

In my opinion, Anti-diuretic hormone is made by special nerve cells found in an area at the base of the brain known as the hypothalamus. The nerve cells transport the hormone down their nerve fibres (axons) to the pituitary gland where the hormone is released into the bloodstream. 

Answer 2

vasopressin is the hormone has direct impact  on urination