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How does human heart activity monitored …

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How does human heart activity monitored ? Explain with P,Q,R,S &T wave complex.

Posted by Mahek Patel 3 years, 10 months ago

CBSE > Class 11 > Biology

1 answers

Md. Ali 3 years, 10 months ago

Our nerve and muscle cells communicate with each other using electrical and chemical signals. Regular electrical signals also control our heartbeat. These signals are sent by a group of cells in the right atrium of the heart known as the sinoatrial node (SA node), and they spread through the heart muscle tissue as tiny electrical impulses. This causes first the atria and then the ventricles of the heart to contract. The way that these signals spread through the heart can also be measured on the surface of our skin. An ECG measures these changes in electrical signals (or, in fact, voltage) on different areas of skin and plots them as a graph. The resulting ECG graph is called an electrocardiogram.

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