Which cytoskeletal element is linked to adherens junctions?

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Prepare for the Epithelial Tissue Structure and Function Test. Explore with multiple choice questions and explanations. Master epithelial tissue concepts for your exam success!

Multiple Choice

Which cytoskeletal element is linked to adherens junctions?

Explanation:
Adherens junctions attach to the actin cytoskeleton. Inside the cell, cadherin proteins at these junctions bind partner proteins (catenins) that connect to actin filaments, forming a continuous belt around the cells. This actin linkage allows contractile forces from the actomyosin network to tighten and shape the tissue, helping maintain epithelial integrity and coordination between neighboring cells. Other options relate to different structural systems—intermediate filaments are more characteristic of desmosomes, microtubules handle transport and polarity, and myosin is a motor that works with actin rather than forming the filament that adherens junctions connect to.

Adherens junctions attach to the actin cytoskeleton. Inside the cell, cadherin proteins at these junctions bind partner proteins (catenins) that connect to actin filaments, forming a continuous belt around the cells. This actin linkage allows contractile forces from the actomyosin network to tighten and shape the tissue, helping maintain epithelial integrity and coordination between neighboring cells. Other options relate to different structural systems—intermediate filaments are more characteristic of desmosomes, microtubules handle transport and polarity, and myosin is a motor that works with actin rather than forming the filament that adherens junctions connect to.

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