What is the Reflex Arc and What Effect Does it have on Hiccups?
A reflex arc is the neural pathway that mediates a reflex action. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This characteristic allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of routing signals through the brain, although the brain will receive sensory input while the reflex action occurs. The main source of the reflex action is through the bottom muscles. There are two types of reflex arc – autonomic reflex arc (affecting inner organs) and somatic reflex arc (affecting muscles). http://en.wikipedia.
