spindle


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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.
mitotic spindle spindle (def. 2).
muscle spindle a mechanoreceptor found between the skeletal 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 myotatic reflex.
sleep s's bursts of activity of a particular waveform in the electroencephalogram in light or early sleep.

spin·dle

(spin'dĕl),
anatomy, pathology any fusiform cell or structure.
[A.S.]

spindle

(spĭn′dl)
n.
1. Biology A cytoplasmic network composed of microtubules along which the chromosomes are distributed during mitosis and meiosis.
2. Anatomy See muscle spindle.

spin·dle

(spin'dĕl)
anatomy, pathology Any fusiform cell or structure.
[A.S.]

spindle

A term used adjectivally in anatomy and referring to any elongated cell or structure pointed at both ends. Fusiform.

spin·dle

(spin'dĕl)
In anatomy and pathology, any fusiform cell or structure.
[A.S.]
References in periodicals archive ?
Move your dominant hand closer to the spindle hook before you give it another spin.
Keep pinching the fiber with your dominant hand, and give the spindle another clockwise spin.
[39] showed that 53.7% [+ or -] 3.1% of sleep spindles were not associated with SWO (no SWO around sleep spindle [+ or -] 1.5 s) and among these isolated spindles, 79.8% were considered as local spindles.
The aim of this section is to describe and comment on automatic spindle detection approaches, through examples of published ASDM; ASDM are mainly characterized by their signal decomposition and decision making processes.
Spindle Features in the Last Part of the NREM Time.
As in the first part of the NREM time, all central spindle types were faster than the respective frontopolar spindles (Table 4).
In general, definitive CK expression by spindle cells, in the appropriate context, is considered to be sufficient evidence of epithelial differentiation, and in fact, the usefulness of various CKs, in addition to p63, have been well documented in several series of metaplastic breast carcinomas, and hence are not further characterized in this study.
Aberrant CK expression, albeit weak and focal, may be seen in the stromal spindle cells of phyllodes tumor, (6) presenting a potential diagnostic pitfall with metaplastic carcinoma, particularly on a core needle biopsy sample.
We also established a technique for cutting a spindle into two halves using glass microneedles (<1 um in tip diameter) (Figure 2).
Our 3D observation of metaphase spindles that self-organized in Xenopus egg extracts revealed that spindle shape and microtubule density were constant irrespective of spindle size, whereas spindle size was correlated with the microtubule amount.
* Another quick way to check spindle alignment is to take the center groover from the pattern side and run a test cut in a piece of wood.
Sleep spindles are half-second to two-second bursts of brain activity, measured in the 10-16 Hertz range on an EEG.