1. A minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division. 2. Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. 3. Centrioles play a role in organizing microtubules that serve as the cell’s skeletal system. 4. They help determine the locations of the nucleus and other organelles within the cell.
