centro-, centr-, centri-, kentro-
(Greek > Latin: center; middle point, mid point; focus, focal point, focalize; zero in on)
This element originally meant "sharp point, goad" or "spur".
2. Having the yolk centrally located; such as, in the ova of arthropods, or a description of an egg with the yolk in the middle.
The centromere is a uniquely specialized region of the chromosome to which spindle fibers attach during cell division.
By directing the assembly of a cells skeleton, this organelle controls division, motility and shape.2. A small region of cytoplasm near the nucleus of a cell.
In animal cells, it contains rod-shaped structures from which the spindle fibers centrioles develop in cell division.
Differences in potential are measured using the needle shaft as a reference and the wire tip as the exploring electrode.