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**Heart Beating and Organ Function**
**Heart Beating and Organ Function** The heart's rhythmic beating is essential for maintaining circulation, ensuring that organs receive oxygen and nutrients while waste products are removed. ### **Heart Function and Beating**: 1. **Pumping Blood**: The heart beats approximately 60-100 times per minute, pumping oxygen-rich blood from the left ventricle to the body and deoxygenated blood from the right ventricle to the lungs. 2. **Electrical Impulses**: The heart's electrical system, led by the sinoatrial (SA) node, controls the heartbeat and coordinates contraction and relaxation. 3. **Blood Circulation**: The heart’s pumping supports both the **pulmonary circulation** (lungs) and **systemic circulation** (body), ensuring oxygen and nutrients reach organs and waste products are expelled.
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