The term “dysautonomia” describes dysfunction of the autonomic nervous system (ANS). It is an umbrella term, meaning there are several types of dysautonomia with similar and different features.

Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of ...

In addition to providing a framework for your body, bones also serve many other important biological functions, such as protecting your internal organs from harm and storing essential nutrients. Read ...

CD4+ T cells, or helper T cells, are one type of lymphocyte that helps coordinate the immune response against infection and disease. They interact and activate other cells in the immune system. The ...