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Introduction to Heart
The adult human heart is a muscular organ about the size of a closed fist.
It pumps blood throughout the body, delivering oxygen and nutrients to tissues.
The heart beats approximately 60-100 times per minute in a healthy adult.
It has four chambers: two atria and two ventricles that work in coordination.
The heart circulates about 5 liters of blood throughout the body every minute.
- Size of a closed fist, weighs 250-350 grams
- Pumps 5 liters of blood per minute
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