Centrosome and centrioles
- Centrosome is an organelle usually containing two cylindrical structures called centrioles.
- Both the centrioles in a centrosome lie perpendicular to each other.
- Each centriole is made up of nine evenly spaced peripheral fibrils of tubulin.
- The central part of the centriole is also proteinaceous and called the hub, which is connected with tubules of the peripheral triplets by radial spokes made of protein.
- The centrioles form the basal body of cilia or flagella, and spindle fibres that give rise to spindle apparatus during cell division in animal cells.
Fig. Centrosome and centriole