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Q.

Is the Heart Controlled by the Brain?

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Detailed Solution

The heart is not directly controlled by the brain, but the brain regulates its rate and rhythm through the autonomic nervous system.

How the Heart Works

  • The heart has its own pacemaker called the SA node (sinoatrial node) that generates electrical signals.
  • This makes the heart beat independently of brain commands.
  • Even if removed from the body, the heart can beat for a short time.

Role of the Brain

SystemFunction on Heart
Sympathetic Nervous SystemIncreases heart rate during stress or exercise.
Parasympathetic Nervous SystemSlows down heart rate during rest.
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Is the Heart Controlled by the Brain?