Medically reviewed by Rafle Fernandez, MD Postural orthostatic tachycardia syndrome (POTS) is a form of autonomic dysfunction. Your autonomic nervous system regulates involuntary functions such as ...

The abdominal aorta is a large artery in your belly that carries blood from the heart to the lower part of the body. In early fetal development, it forms from two smaller blood vessels, called the ...