Frizzled receptors are a family of proteins that play a crucial role in cell signaling, particularly in the Wnt signaling pathway. They are found on the surface of cells and help transmit signals from outside the cell to its interior, influencing various cellular processes such as growth, differentiation, and movement. These receptors are characterized by their unique structure, which includes several transmembrane domains. When Wnt proteins bind to Frizzled receptors, they activate intracellular signaling cascades that can affect gene expression and cellular behavior, making them essential for development and tissue homeostasis.