Illustration: Sinoatrial Node In The Heart
ID 174971876 © 7activestudio | Megapixl.com
The SA sinoatrial node generates an electrical signal that causes the upper heart chambers atria to contract. The signal then passes through the AV atrioventricular node to the lower heart chambers ventricles, causing them to contract, or pump. The SA node is considered the pacemaker of the heart. The heart's natural pacemaker – the SA node – sends out regular electrical impulses from the top chamber (the atrium) causing it to contract and pump blood into the bottom chamber (the ventricle). The electrical impulse is then conducted to the ventricles through a form of 'junction box' called the AV node.
CATEGORIES
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
KEYWORDS
aorta arteries arterioles artery atria atrioventricular atrium blood capillaries chambers cycle deoxygenated electrical endocardium epicardium heart impulse lungs myocardium node organ oxygenated oxygenrich pulmonary pulse pump signal signals sinoatrial tissue tricuspid upper veins ventricle ventricles venules
More images on Dreamstime
Similar Images
More images by the same author
1 week free trial. Any size, for free
Renews at $25/month, cancel or upgrade at any time
Click here for your free trial!
240,910,088 images | 1,214,731 contributors | 53,316,375 total users