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Related Experiment Videos

Embryonic life and human life.

M C Shea

    Journal of Medical Ethics
    |December 1, 1985
    PubMed
    Summary
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    A new human life begins when developing organs function as a whole, not merely from cellular activity. This requires a functioning brain to coordinate bodily systems, mirroring the definition of death.

    Area of Science:

    • Embryology
    • Neuroscience
    • Developmental Biology

    Background:

    • The precise beginning of human life is a complex question with biological and philosophical dimensions.
    • Current definitions often focus on cellular viability or genetic uniqueness.

    Purpose of the Study:

    • To propose a new criterion for the beginning of human life based on functional organ systems.
    • To establish a symmetrical definition for the beginning and end of human life.

    Main Methods:

    • Conceptual analysis of biological development.
    • Comparative analysis of life and death criteria.

    Main Results:

    • Human life begins when developing organs and systems function cohesively as a whole.
    Keywords:
    Genetics and ReproductionAbortion, Induced--religious aspectsBiologyEmbryoEthicsFamily PlanningFertility Control, PostconceptionFetal MembranesFetusPhysiologyPregnancyReproductionSocial Sciences

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  • A functioning brain is essential for coordinating these systems and marking the start of life.
  • This definition is symmetrical with the cessation of function defining death.

    • Conclusions:

    • The initiation of human life is marked by integrated physiological function, not just cellular existence.
    • A coordinated, functioning brain is the critical determinant for the commencement of human life.
    • This functionalist perspective offers a unified view of life's beginning and end.