Human heart, a muscular organ, pumps blood throughout the body, delivering oxygen and nutrients. With four chambers and a rhythmic beat, it plays a vital role in maintaining circulation and sustaining life.
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The human heart is a vital organ that pumps blood through the circulatory system. It consists of four chambers—two atria and two ventricles. Its rhythmic contractions maintain blood circulation and oxygenate tissues.
The human brain is a complex organ responsible for cognition, emotions, and control of bodily functions. It consists of billions of neurons interconnected through synapses, forming the basis of consciousness and intelligence.