👉 In medicine, a periganglionic nerve is a peripheral nerve that originates from the spinal cord and enters the pericardium (the layer of tissue surrounding the heart). This nerve plays a crucial role in the regulation of blood flow to the myocardium, which is responsible for the beating and contraction of the heart muscle. The term "periganglionic" refers to the location where this nerve originates from, as it originates from the spinal cord.
