citoskeletonet

The cytoskeleton is a dynamic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence. It is composed of three main types of filaments: microfilaments, intermediate filaments, and microtubules. Microfilaments, also known as actin filaments, are thin, flexible rods that play a role in cell shape, muscle contraction, and cell movement. Intermediate filaments are tougher and more stable, providing mechanical strength to cells and tissues. Microtubules are hollow tubes that serve as tracks for intracellular transport and are essential for cell division and maintaining cell shape.

The cytoskeleton is involved in a wide range of cellular processes. It anchors organelles, provides mechanical support, and facilitates cell movement through processes like amoeboid motion and flagellar or ciliary beating. During cell division, the cytoskeleton forms the spindle fibers that separate chromosomes. It also plays a crucial role in cell signaling and communication.

The structure and function of the cytoskeleton are constantly regulated by various proteins that promote or inhibit filament assembly and disassembly. This dynamic nature allows cells to adapt to changing environments and perform diverse functions. Disruptions in cytoskeletal organization are implicated in various diseases, including cancer and neurodegenerative disorders.