Nodos are small, rounded structures found in various biological systems, often serving as points of connection or junctions. In the context of plants, nodos refer to the nodes on a stem where leaves, branches, or flowers emerge. These nodes play a crucial role in the growth and development of the plant. In the realm of anatomy, nodos can also refer to lymph nodes, which are small, bean-shaped organs that are part of the lymphatic system. They help filter harmful substances and play a vital role in the body's immune response.