Exam 5: Cell Structure

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The cell connections that allow skin cells to hold onto each other in a sheet are primarily formed by specialized structures called desmosomes. Desmosomes are protein complexes that act like spot welds, anchoring adjacent cells together and providing mechanical strength to the tissue. They are found in the outermost layer of the skin, known as the epidermis, and help to maintain the integrity of the tissue.

In addition to desmosomes, the skin cells are also connected by tight junctions and adherens junctions, which help to seal the gaps between cells and provide further structural support. These junctions work together to form a strong, cohesive layer of cells that can withstand mechanical stress and maintain the barrier function of the skin.

When Rebecca experienced second-degree sunburn, the damage to her skin likely disrupted these cell connections, leading to the discomfort and peeling of the epithelial tissue as her skin began to heal. As the skin regenerates, the cell connections will reform, allowing the new layers of skin cells to hold onto each other and restore the protective barrier of the skin.