Artificial heart valves. Two prosthetic heart valves of the ball-and-cage type, showing the closed (left) and open (right) positions. A heart valve re

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Artificial heart valves. Two prosthetic heart valves of the ball-and-cage type, showing the closed (left) and open (right) positions. A heart valve regulates the flow of blood from the heart to the main arteries which distribute blood to the lungs or around the body. Malfunctions of a heart valve due to disease or malformation may result in it narrowing with a consequent reduction in blood flow or backflow. An incompetent heart valve can be replaced with a prosthetic valve through surgery.

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Size: 5208px × 3508px
Photo credit: © STEVE ALLEN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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