Which nerve system regulates dialation of the blood vessels?

Autonomic system. The autonomic nervous system, which consists of the sympathetic & parasympathetic components control our pulse, respiration, blood pressure & many other body functions without our conscious input.

Related Questions

Where is autonomic nervous system located? Is there cranial nerve which regulates dialation/constriction of the blood vessels?

Throughout the body. The autonomic system includes the sympathetic and parasympathetic systems. Sympathetic nerves exit the thoracic & lumbar cns, parasympathetic exit the cranial & sacral cns. They then go to organs throughout the body. College lecture on this: http://www. Youtube. Com/watch? V=erlvvlqoaow.