Prosthetic heart valves. Boxes of different sized prosthetic (artificial) heart valves. There are four valves in the human heart,all of which prevent the backflow of blood. Damage to the valves can lead to malfunctioning of the heart and death. If a valve cannot be repaired it must be replaced | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Reeve, Antonia |
Taille de l’image : | 3201 px × 4803 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |