Use this feature to invite colleagues, clients, and associates to view this content item(s). Please supply your name and email address (for reply purposes) and the recipient's name and email address. To send the email, click the "Send" button. Fields marked with an asterisk are required. To return, click the "Cancel" button.
Normal Heartbeat - ECG, EKG Reading. This medical illustration features an EKG monitor reading showing a recording of the electrical impulses generated by the sinuatrial (SA) and atrioventricular (AV) nodes of the heart. The artrioventricular node is illuminated. The illustration also includes a cut-away view of the heart and great vessels. The cardiac muscles and seperate atria and ventricles can be viewed.