Arizona State University (ASU) HCR240 Human Pathophysiology Test 1 Practice

Integrins are a family of cell surface receptors that play a crucial role in cell adhesion and communication. They are present on a wide variety of cells, not limited to a single type. The correct choice highlights that integrins can be found on all epithelial cells as well as certain immune cells, including white blood cells.

Epithelial cells utilize integrins to help maintain their structural integrity and to facilitate interactions with the extracellular matrix. This interaction is essential for processes such as tissue repair and immune responses. Additionally, immune cells, particularly leukocytes, express specific integrins that are vital for adhesion to endothelial cells during the immune response and migration to sites of inflammation.

In contrast, the other options are too restrictive. For instance, integrins are not limited to white blood cells or platelets, nor are they exclusive to neural cells. Rather, they are broadly distributed across many cell types throughout the body, underscoring their versatile role in various physiological processes.