This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Marey Intrakardial. de Intrakardial sphygmographisch gewonnene Pulsdruckkurven mit chronologischer Zuordnung der Herzaktionsphasen Vorhofdruck Ventrikeldruck kardiale Pulskurve Marey De la pulsation cardiaque Mm Soc Biol Creator tienneJules Marey PDold original upload log de CommonsHelper page de MareyIntrakardial Ejw