Fish heart valve surface,coloured scanning electron micrograph (SEM). Heart valves are found between the chambers of the heart and prevent the back-flow of blood. The fish heart pumps deoxygenated blood to the gills where it is oxygenated and then flows to the rest of the body | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nishinaga, Susumu |
Taille de l’image : | 4850 px × 3633 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |