Excessive Yawning And Parasympathetic Nervous System

The parasympathetic nervous system is a part of the autonomic nervous system (ANS). The autonomic nervous system consists of motor nerves. They carry information from the smooth muscles, the cardiac muscles and glands.

Are Shingles Contagious

In the United States, each year nearly one million people are afflicted by shingles, also known as herpes zoster. Shingles is a painful viral infection, which is caused by the chicken pox virus. Shingles can develop in anyone who has had chicken pox.