The Four Heart Valves: Types, Problems, and More - Verywell …
https://www.verywellhealth.com/heart-valves-where-they-are-and-what-they-do-3157002
WebSep 19, 2023 · The valves help to maintain proper blood flow through the heart, keeping blood moving efficiently and smoothly, and in the right direction. In addition to the valves, there are four heart chambers — the upper chambers are called the left and right atria, the lower chambers are the left and right ventricle. SDI Productions / Getty Images.
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