![]() For example, Gap Junctions perform a necessary function for the development of organs, embryos, and tissues. This communication is very important as Gap Junctions allow for complex functions to happen. Their primary function is to allow the regulated passage of electrical impulses, molecules and ions from one cell to another. The presence of the Gap Junction directly connects the cytoplasm of adjacent cells. Gap Junctions are specialized connections between cells. The main difference lies in the fact that the Hemidesmosome is anchored to the basal lamina of the cell, while the Desmosome is anchored to the cytoskeleton of the cell. Like Desmosomes, the Hemidesmosome acts as an anchor between adjacent cells. They connect with other cells by extending filaments to reach other Hemidesmosomes of other adjacent cells. Hemidesmosomes are located in the basal lamina of a cell. In muscular tissue, Desmosomes hold muscles together. The two Desmosomes intertwine to in an S, W, or A shaped manner. Desmosomes are attached to the cytoskeleton of a cell via the demosplakin.įrom there, the adhesion protein of the Desmosomes extends toward the cellular membrane, passes through the protective membrane, and attaches itself to another Desmosomes from another adjacent cell. Desmosomeĭesmosomes are similar in function to Adherens Junctions. The cytoskeleton of the cell itself, which has actin microfilaments.They connect the cytoskeleton to Cadherin. There are anchor proteins inside the cell.Cadherin are floating adhesive substances located outside of the cell.Several proteins make up an Adherens Junction: They help in binding the structure of the heart, keeping the heart together even as is it expands and contracts to supply oxygen throughout our body. In certain parts of the body, Adherens Junctions perform a very important function. The junction is formed primarily with calcium. The primary function of the Adherens Junction is to stick to an adjacent cell or surface. Otherwise known as Zonula Adherens, the Adherens Junction literally forms a continuous belt around a cell. For invertebrates, junctions that match the functions of the Tight Junction are called Septate Junctions. Tight Junctions can only be found in vertebrates. Tight Junctions also act as a link between cytoskeletons of individual cells, thus holding adjacent cells in place. Should the cell allow a certain amount of nutrients to pass through, it is the Tight Junction that acts as the doorway to the body of the cell. ![]() The only way substances can travel is by passing through the cell itself. The gap between cells is so very tight that nothing may pass through. This happens at that point where cells brush against each other. Among the different types of cell junctions, the Tight Junction directs the movement of solutes and water nestled between epithelia.
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