During Prenatal Development, When Does the Heart Start to Beat

question 29

Multiple Choice

During prenatal development, when does the heart start to beat?

• A) Within the first month
• B) By 2 months
• C) By 3 months
• D) By 4 months

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Definitions:

Industrial Stage

A phase of societal development marked by the widespread growth of industries, technological advancements, and changes in economic and social structures.

Demographic Transition Model

A theory describing the transition from high birth and death rates to lower birth and death rates as a country or region develops from a pre-industrial to an industrialized economic system.

Development

The process of economic, social, and cultural transformation that improves the well-being and living standards of a society or region.

U.S.-Canada Border

This is the international boundary between the United States and Canada, extending 8,891 kilometers, making it the longest binational land border in the world.