mitotic spindle


spindle

 [spin´d'l] 1. a pin tapered at one end or both ends, or something with this shape.2. the thin, tapering figure occurring during metaphase of cell division, composed of microtubules radiating from the centrioles and connecting to the chromosomes at their centromeres. Called also mitotic spindle.3. muscle spindle.mitotic spindle spindle (def. 2).muscle spindle a mechanoreceptor found between the skeletal fibers" >muscle fibers; the muscle spindles are arranged in parallel with muscle fibers, and respond to passive stretch of the muscle but cease to discharge if the muscle contracts isotonically, thus signaling muscle length. The muscle spindle is the receptor responsible for the stretch or reflex" >myotatic reflex.sleep s's bursts of activity of a particular waveform in the electroencephalogram in light or early sleep.

mi·tot·ic spin·dle

the fusiform figure characteristic of a dividing cell; it consists of microtubules (s. fibers), some of which become attached to each chromosome at its centromere and are involved in chromosomal movement; other microtubules (continuous fibers) pass from pole to pole. Synonym(s): nuclear spindle

mi·tot·ic spin·dle

(mī-tot'ik spin'dĕl) The fusiform figure characteristic of a dividing cell; it consists of microtubules (spindle fibers), some of which become attached to each chromosome at its centromere and appear to be involved in chromosomal movement; other microtubules (continuous fibers) pass from pole to pole.
Synonym(s): nuclear spindle.