To match: The description of cell junction on the left with the cell junction on the right. Introduction: In the tissues where the cells are present in proximity to each other, the cell-adhesion molecules provide certain tissue cohesion as they combine the nearby cells with each other. However, some of the cells within the given kinds of tissues are directly associated with each other via one of the three kinds of unique cell junctions, that is, the tight junctions, desmosomes, or the gap junctions.

Question

Want to see the full answer?

Answer 1

Question

Chapter 3, Problem 7RE

Summary Introduction

To match:

The description of cell junction on the left with the cell junction on the right.

Introduction:

In the tissues where the cells are present in proximity to each other, the cell-adhesion molecules provide certain tissue cohesion as they combine the nearby cells with each other. However, some of the cells within the given kinds of tissues are directly associated with each other via one of the three kinds of unique cell junctions, that is, the tight junctions, desmosomes, or the gap junctions.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

During a microscopy exercise in the anatomy laboratory,a student makes the following observations about a tissuesection: (1) The section contains some different types ofscattered protein fibers—that is, they exhibit differentwidths, some are branched, some are long and unbranched,and their staining characteristics differ (some are seenonly with specific stains). (2) Several cell types withdifferent morphologies are scattered throughout the section,but these cells are not grouped tightly together. (3) Theexamined section has some “open spaces”—that is, placesbetween cells and the observed fibers in the section thatappear clear with no recognizable features. What type oftissue is the student observing? Where might this tissue befound in the body?

Match the following to their proper description (answers may be used more than once). Gap junctions Adhering junctions Desmosomes Hemidesmosomes Tight junctions Tight junctions Tight junctions Connexons Connexons Zonulae adherens Cadherins Desmosomes Are also known as “zonulae adherens”. Are also known as “zonulae occludens”. Are calcium ion-dependent glycoproteins that mediate adhesion in adhering junctions. Are hexameric complexes formed by connexin proteins. Bind the cells to the basal lamina. Contain a central hydrophilic pore and occur in gap junctions. Contain protein filaments. Encircle the cell and provide firm connections with neighboring cells. Form seals that prevent the flow materials between adjacent epithelial cells. Form thin bands that completely encircle the cell. Permit the rapid exchange of materials between adjacent cells. Provide firm adhesion between cells via protein filaments that are coupled to intracellular filaments via a protein plaques.

Which of the following statements related to intercellular junctions is false? Cadherins are important cell-cell adhesion proteins. A cadherin-mediated junction involves many cadherin molecules to achieve strong adhesion. The cytoplasmic domain of cadherins interacts with actin or intermediate filament cytoskeleton through adaptor proteins. Because tight junctions seal the membrane of adjacent epithelial cells, transmembrane proteins in the apical portion of the plasma membrane cannot move to the basal lateral domain or vice versa. Proteins can diffuse through an open gap junction.