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Related Concept Videos

Anatomical Movements00:51

Anatomical Movements

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Anatomical movements refer to the various actions or motions that can be performed by the body's joints and muscles. These movements are described using specific terms to provide a standardized way of discussing and understanding the range of motion at different joints.
Here are some common anatomical movements:
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A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
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A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
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Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
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A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. Its operation is based on converting the force applied at its handle into a torsional moment, causing the upward impending motion of the screw. This movement is accomplished by overcoming the static friction between the threads of the screw and the jack.
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Angular momentum characterizes an object's rotational motion and is defined as the moment of its linear momentum about a specified point O. When a particle moves along a curved path in the x-y plane, the scalar formulation calculates the magnitude of its angular momentum, utilizing the moment arm (d), representing the perpendicular distance from point O to the line of action of the linear momentum. Despite being scalar in formulation, angular momentum is inherently a vector quantity. Its...
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Related Experiment Video

Updated: Feb 27, 2026

Author Spotlight: Bridging the Gap Between In Vivo and Ex Vivo Studies with the "Avatar" Technique to Advance Muscle Mechanics Research
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Author Spotlight: Bridging the Gap Between In Vivo and Ex Vivo Studies with the "Avatar" Technique to Advance Muscle Mechanics Research

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Movement.

Thomas Ferkol1

  • 1Departments of Pediatrics, Cell Biology, and Physiology, Washington University, St. Louis, MO, USA.

Paediatric Respiratory Reviews
|July 9, 2017
PubMed
Summary

Primary ciliary dyskinesia (PCD) is a genetic disorder affecting cilia, causing chronic lung issues and infertility. Recent genetic discoveries are improving diagnosis and understanding of this complex condition.

Area of Science:

  • Genetics
  • Cell Biology
  • Medical Research

Background:

  • Primary ciliary dyskinesia (PCD) is an inherited disorder impacting ciliary function.
  • It leads to chronic sinopulmonary disease, middle ear effusions, laterality defects, and infertility.

Purpose of the Study:

  • To summarize the current understanding of primary ciliary dyskinesia genetics and phenotypes.
  • To highlight the impact of recent genetic discoveries on diagnostics.

Main Methods:

  • Review of genetic and functional studies in primary ciliary dyskinesia.
  • Identification and categorization of over 35 disease-associated genes.

Main Results:

  • Over 35 genes linked to primary ciliary dyskinesia have been identified.
Keywords:
DiagnosisPrimary ciliary dyskinesia

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  • These genes encode axonemal motor proteins, ciliary regulatory proteins, and cytoplasmic assembly proteins.
  • Genetic findings reveal significant clinical heterogeneity.

    • Conclusions:

    • Advances in understanding primary ciliary dyskinesia genetics are revolutionizing diagnostic approaches.
    • The identified genes provide insights into the diverse clinical manifestations of PCD.