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Related Concept Videos

Lateralization01:28

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
Two-Dimensional Force System01:20

Two-Dimensional Force System

A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
Unsymmetric Bending - Angle of Neutral Axis01:15

Unsymmetric Bending - Angle of Neutral Axis

Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal centroidal axes. The...
Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...

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Related Experiment Video

Updated: Jun 8, 2026

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound (fTCD)
07:44

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound (fTCD)

Published on: September 27, 2010

Left-right axis determination.

Marta Ibañes1, Juan Carlos Izpisúa Belmonte2,3

  • 1Department of Estructura i Constituents de la Matèria, University of Barcelona, Barcelona, Spain.

Wiley Interdisciplinary Reviews. Systems Biology and Medicine
|September 14, 2010
PubMed
Summary

Embryonic development establishes conserved left-right (L-R) organ asymmetries in vertebrates. Understanding how this symmetry breaking is initiated, directed, and coordinated remains a key challenge in developmental biology.

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Last Updated: Jun 8, 2026

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound (fTCD)
07:44

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Published on: September 27, 2010

Spinal Cord Lateral Hemisection and Asymmetric Behavioral Assessments in Adult Rats
08:46

Spinal Cord Lateral Hemisection and Asymmetric Behavioral Assessments in Adult Rats

Published on: March 24, 2020

Area of Science:

  • Developmental Biology
  • Systems Biology
  • Genetics

Background:

  • Vertebrates exhibit consistent left-right (L-R) asymmetric organ positioning and morphology during embryonic development.
  • These asymmetries are evolutionarily conserved across species, indicating fundamental biological mechanisms.
  • Despite extensive research, the precise mechanisms initiating and coordinating L-R axis formation in embryos are not fully understood.

Purpose of the Study:

  • To investigate the fundamental questions surrounding the initiation, directionality, transmission, and coordination of L-R symmetry breaking in vertebrate embryos.
  • To explore the conserved elements of L-R axis determination across different organisms.
  • To highlight the need for a systems biology approach to understand the complex interplay of factors involved.

Main Methods:

  • Review and synthesis of existing research on vertebrate L-R axis formation.
  • Focus on identifying knowledge gaps in understanding the early stages of symmetry breaking.
  • Emphasis on the potential of systems biology to integrate diverse biological processes.

Main Results:

  • Significant progress has been made in understanding L-R asymmetry over the past decade.
  • Key questions regarding the 'how, when, where, and why' of initial symmetry breaking persist.
  • Current understanding of how tissue and organ L-R differences arise during embryogenesis is limited.

Conclusions:

  • A comprehensive understanding of vertebrate L-R axis formation requires further investigation.
  • Systems biology offers a promising framework to unravel the complex dynamics of gene networks, epigenetics, cilia, fluids, and charged molecules.
  • Continued research is crucial for elucidating the intricate processes governing embryonic L-R asymmetry.