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Related Concept Videos

Mechanism of Lamellipodia Formation01:31

Mechanism of Lamellipodia Formation

Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
Rapidly Varying Flow01:24

Rapidly Varying Flow

Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
Isothermal Processes01:21

Isothermal Processes

A thermodynamic process that occurs at constant temperature is called an isothermal process. Heat slowly flows into the system or out of the system to maintain thermal equilibrium. Processes involving phase changes like water evaporation into steam or freezing water into ice at a constant temperature are examples of Isothermal Processes.
An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
Mechanism of Filopodia Formation01:39

Mechanism of Filopodia Formation

Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Isochoric and Isobaric Processes01:21

Isochoric and Isobaric Processes

A thermodynamic process that occurs at constant volume is called an isochoric process. According to the first law of thermodynamics, heat supplied or removed from the system is partially utilized to perform work and change the internal energy of the system. However, in an isochoric process, the volume remains constant. Hence, the work done by the system is zero. Therefore, the exchange of heat changes the internal energy of the system only. 
Suppose 1000 g of water is heated from 40 degrees...
Speciation Rates01:07

Speciation Rates

Speciation can proceed at markedly different rates, and evolutionary biologists commonly describe these differences through the models of gradualism and punctuated equilibrium. Both patterns explain how new species arise, but they differ in the tempo and continuity of evolutionary change. In both cases, evolutionary change arises from heritable variation within populations, with natural selection often shaping traits that improve survival and reproduction under specific environmental conditions.

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Related Experiment Video

Updated: Jul 12, 2026

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

Structural processes at slow-spreading ridges.

J C Mutter, J A Karson

    Science (New York, N.Y.)
    |July 31, 1992
    PubMed
    Summary

    Slow-spreading mid-ocean ridges exhibit rifted depressions, unlike fast-spreading ridges

    Area of Science:

    • Geophysics and Tectonics
    • Marine Geology
    • Plate Tectonics

    Background:

    • Mid-ocean ridges (MORs) exhibit distinct characteristics based on spreading rate.
    • Slow-spreading MORs (<35 mm/yr) are characterized by rifted depressions and asymmetry.
    • Fast-spreading MORs feature symmetric volcanic edifices.

    Purpose of the Study:

    • To investigate the contrasting crustal formation processes at slow- and fast-spreading mid-ocean ridges.
    • To determine the role of mechanical deformation versus magmatic processes in ridge segmentation.

    Main Methods:

    • Analysis of seismic imaging data from slow-spreading mid-ocean ridges.
    • Comparison of geological features (faults, earthquakes, rock exposures) between slow- and fast-spreading ridges.

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    Quantitative Analysis of Cell Edge Dynamics during Cell Spreading
    10:54

    Quantitative Analysis of Cell Edge Dynamics during Cell Spreading

    Published on: May 22, 2021

    Related Experiment Videos

    Last Updated: Jul 12, 2026

    Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
    06:55

    Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

    Published on: August 5, 2016

    Measuring Cell-Edge Protrusion Dynamics during Spreading using Live-Cell Microscopy
    05:50

    Measuring Cell-Edge Protrusion Dynamics during Spreading using Live-Cell Microscopy

    Published on: November 1, 2021

    Quantitative Analysis of Cell Edge Dynamics during Cell Spreading
    10:54

    Quantitative Analysis of Cell Edge Dynamics during Cell Spreading

    Published on: May 22, 2021

    Main Results:

    • Slow-spreading ridges show significant mechanical deformation, evidenced by deep earthquakes, major normal faults, and exposed lower crustal rocks.
    • Segmentation in slow-spreading ridges is linked to deformational processes, not primarily magmatic ones.
    • Fast-spreading ridges display symmetric, elevated volcanic structures.

    Conclusions:

    • Mechanical deformation plays a more critical role in crustal formation at slow-spreading ridges compared to fast-spreading ridges.
    • The segmentation of slow-spreading ridges is intrinsically tied to the deformational process.
    • Understanding ridge segmentation is key to comprehending MOR evolution.