Filopodia are slender, finger-like projections that extend from the surface of cells. They are composed of actin filaments and play a crucial role in cell movement and sensing the environment. By exploring their surroundings, filopodia help cells navigate and interact with other cells and structures. These projections are particularly important during processes like embryonic development and wound healing. They facilitate communication between cells and assist in forming connections, guiding cells to their appropriate locations. Filopodia also contribute to the formation of neural networks in the brain by helping neurons establish synapses.