It opens due to a build-up of pressure in the right atrium, and prevents back flow of blood from the right ventricle to the right atrium. The bicuspid valve separates the left atrium and left ...

A check mark. It indicates that the relevant content has been reviewed and verified by an expert This story has been reviewed by a professional to ensure you get the most accurate and useful ...

Real time quote data is not available at this time. *Data is provided by Barchart.com. Data reflects weightings calculated at the beginning of each month. Data is subject to change. **Green ...