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The human heart is a vital organ that pumps blood throughout the body, supplying oxygen and nutrients to organs and tissues. On average, a healthy adult heart beats about 72 times per minute while at rest. This rate is known as the resting heart rate, though it can vary between individuals depending on age, fitness level, and activity.
During physical activity or exercise, the heart beats faster to supply more oxygen to muscles. In contrast, in well-trained athletes, the resting heart rate can be slightly lower, sometimes around 60 beats per minute, due to a stronger and more efficient heart.
The heart’s pumping action is controlled by electrical signals generated in the sinoatrial (SA) node, which acts as the heart’s natural pacemaker. Each heartbeat involves two phases:
Systole – the heart contracts and pumps blood out.
Diastole – the heart relaxes and fills with blood.
Other options are incorrect:
85, 90, and 120 times per minute are higher than the average resting heart rate for a healthy adult.
Understanding the average heart rate is a key part of biology, particularly in human anatomy, physiology, and cardiovascular health. It helps students learn how the heart functions to maintain life and respond to different activities.
In short, the average human heart beats about 72 times per minute, ensuring continuous blood circulation and proper functioning of the body.
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