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Gastrulation01:56

Gastrulation

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Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata...
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Related Experiment Video

Updated: Apr 30, 2026

Probing the Roles of Physical Forces in Early Chick Embryonic Morphogenesis
06:33

Probing the Roles of Physical Forces in Early Chick Embryonic Morphogenesis

Published on: June 5, 2018

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Morphomechanics: transforming tubes into organs.

Larry A Taber1

  • 1Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA.

Current Opinion in Genetics & Development
|May 6, 2014
PubMed
Summary

Researchers are exploring the physical forces driving organ development, focusing on how differential growth shapes the heart and brain. Understanding these mechanical processes is key to linking genetics with organ form.

Area of Science:

  • Developmental Biology
  • Biophysics
  • Mechanics of Organogenesis

Background:

  • Decades of focus on molecular and genetic factors in organogenesis.
  • Renewed interest in the physical and mechanical processes underlying organ formation.

Purpose of the Study:

  • Review the mechanical processes in heart and brain development.
  • Focus on cardiac looping, primitive brain tube shaping, and cerebral cortex folding.

Main Methods:

  • Analysis of recent studies on organogenesis mechanics.
  • Examination of differential growth and differential contraction as mechanisms.

Main Results:

  • Differential growth identified as a primary driver of large-scale shape changes.

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Last Updated: Apr 30, 2026

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  • Cardiac and brain tubes bend, and the cerebral cortex buckles due to differential growth.
  • Local shape changes involve mechanisms like differential contraction.

    • Conclusions:

    • Mechanical processes, particularly differential growth, are crucial for organogenesis.
    • Understanding biophysical mechanisms is essential for linking genetics to organ form and structure.