8 They're also huge. The Great Lakes touch Canada, Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania and Wisconsin. Combined, the length of all five shorelines is about 44 percent of the Earth's circumference.
1 Spindle (textiles) , a device to spin fibers into thread. 2  Spindle (tool) , is the main rotating part of a machine tool, woodworking machine, etc. 3  Segmented spindle, a spindle consisting of discrete elements that can be assembled and disassembled on the fly.
Spindle fibers are a part of the spindle apparatus, which moves chromosomes during mitosis and meiosis to ensure each daughter cell gets the correct number of chromosomes. The spindle apparatus consists of spindle fibers, motor proteins, chromosomes, and in some cells, structures called asters. In animal cells, spindle fibers are produced from cylindrical microtubules called centrioles. Centrioles form asters and asters generate spindle fibers during the cell cycle. Centrioles are located in a region of the cell known as the centrosome. Spindle Fibers and Chromosome Movement