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What Happens to an Infant's Heart Rate When a New

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What happens to an infant's heart rate when a new stimulus is presented?


Definitions:

Cushion the Heart

Likely refers to the protective layer around the heart, such as the pericardial fat or the pericardium, but without specific context, the term is ambiguous.

Outermost Layer

The external surface or coating of an object or body.

Epicardium

The outermost layer of the heart's wall, playing a crucial role in providing a protective layer and contributing to the heart's lubricative outer covering.

SA Node

The sinoatrial node, a group of cells in the heart that regulates the heart's rhythm by generating electrical impulses.

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