A Normal Heartbeat Is Not Set or Initiated by the Nervous

question 37

Essay

A normal heartbeat is not set or initiated by the nervous system, which may be expected since the heart has electrical activity. If not the nervous system, then what actually regulates or initiates a normal heartbeat?

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Definitions:

Physical Arousal

A physiological response of the body to stimuli, leading to increased heart rate, respiration, and energy preparation.

Proximity

The physical or psychological closeness between people, which can influence attraction and the formation of relationships.

Mirror-Image Photographs

Photographs that are reversed images of the original, resembling how one would look in a mirror.

Mere Exposure Effect

The phenomenon that repeated exposure to novel stimuli increases liking of them.