You have two carotid arteries in your neck that are responsible for supplying oxygen-rich blood to your head and brain. Like all arteries, carotid arteries are made up of three layers: An outer ...

Lipoprotein (a) is a low-density lipoprotein that transports cholesterol in the blood. The lipoprotein (a) test — or Lp(a) test — determines the level of this lipoprotein in the blood, and its results ...

The patient’s heart rate lowered to 95 bpm, and blood pressure remained stable. She remained on room air and reported feeling ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

We often think we know more than we actually do. While four in five Americans consider themselves knowledgeable about the human body, only one in ten knows that O-negative is the universal blood type, ...