spindle


spindle
In anatomy and pathology, any fusiform cell or structure. [A.S.]
- aortic s. a fusiform dilation of the aorta immediately beyond the isthmus. SYN: His s..
- central s. a central group of microtubules (continuous fibers) that course uninterrupted, between the asters, in contrast to the microtubules attached to the individual chromosomes (s. fibers).
- cleavage s. the s. formed during the cleavage of a zygote or its blastomeres.
- His s. SYN: aortic s..
- Kühne s. SYN: neuromuscular s..
- mitotic s. 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. SYN: nuclear s..
- muscle s. SYN: neuromuscular s..
- neuromuscular s. a fusiform end organ in skeletal muscle in which afferent and a few efferent nerve fibers terminate; it contains from 3–10 striated muscle fibers (intrafusal fibers) that are much smaller than the ordinary muscle fibers, are separated from them by a capsule that encloses the organ, and are innervated by the thin axon of a gamma motoneuron (gamma motor fiber); the sensory endings that occur on the intrafusal fibers are either annulospiral or flower spray endings; this sensory end organ is particularly sensitive to passive stretch of the muscle in which it is enclosed. SYN: Kühne s., muscle s..
- neurotendinous s. SYN: Golgi tendon organ.
- nuclear s. SYN: mitotic s..
- sleep s. the electroencephalographic record of 14-per-second bursts of wave frequency seen on EEG examination.

* * *

spin·dle 'spin-dəl n
1) something shaped like a round stick or pin with tapered ends: as
a) a network of chiefly microtubular fibers along which the chromosomes are distributed during mitosis and meiosis
b) MUSCLE SPINDLE
2) SLEEP SPINDLE

* * *

n.
a collection of fibres seen in a cell when it is dividing. The fibres radiate from the two ends (poles) and meet at the centre (the equator) giving a structure shaped like two cones placed base to base. It plays an important part in chromosome movement in mitosis and meiosis and is also involved in division of the cytoplasm.

* * *

spin·dle (spinґdəl) 1. a rod or pin that tapers at one end or both ends, or something having this shape. 2. the fusiform figure occurring in the cell nucleus during the metaphase of mitosis, composed of microtubules radiating from the centrioles and connecting the centrally located chromosomes at their centromeres. Called also mitotic s. and nuclear s. 3. a type of fusiform brain wave occurring on the electroencephalogram in groups at a frequency of about 14 per second, usually while the patient is falling asleep. 4. muscle s.

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • Spindle — may refer to:In technology*See also: Axle *A spindle is part of an automobile suspension system. It carries the hub for the wheel and attaches to the upper and lower control arms. *A spindle is part of a bicycle pedal. It carries the pedal body,… …   Wikipedia

  • Spindle — Spin dle, n. [AS. spinal, fr. spinnan to spin; akin to D. spil, G. spille, spindel, OHG. spinnala. [root]170. See {Spin}.] 1. The long, round, slender rod or pin in spinning wheels by which the thread is twisted, and on which, when twisted, it is …   The Collaborative International Dictionary of English

  • spindle — [spin′dəl] n. [ME (with intrusive d ) < OE spinel < spinnan, to SPIN] 1. a slender rod or pin used in spinning; specif., a) in hand spinning, a rounded rod, usually wooden, tapering toward each end, for twisting into thread the fibers… …   English World dictionary

  • Spindle — Spin dle, v. i. [imp. & p. p. {Spindled}; p. pr. & vb. n. {Spindling}.] To shoot or grow into a long, slender stalk or body; to become disproportionately tall and slender. [1913 Webster] It has begun to spindle into overintellectuality. Lowell.… …   The Collaborative International Dictionary of English

  • spindle — spindle. См. веретено [деления]. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Spindle — Spindle. См. Шпиндель. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Spindle — (spr. ßpindl), engl. Großmaß für Baumwollengarn = 18 Hanks zu 7 Skeins oder 13,825,5 m; für Leinen und Hanfgarn 4 Hasps zu 6 Hears von 2 Cuts = 13,166,5 m, früher in Schottland = 38 und in Irland = 48 Leas zu 300 Yards …   Meyers Großes Konversations-Lexikon

  • spindle — O.E. spinel, prop. an instrument for spinning, from stem of spinnan (see SPIN (Cf. spin)), with intrusive d . Related to O.S. spinnila, O.Fris. spindel, O.H.G. spinnila, Ger. Spindel. As a type of something slender, it is attested from 1570s …   Etymology dictionary

  • spindle — (izg. spìndl) m DEFINICIJA tehn. dio stroja koji preuzima i dalje prenosi zakretni moment, tj. snagu; pogonska osovina, vreteno, vratilo ETIMOLOGIJA engl …   Hrvatski jezični portal

  • spindle — ► NOUN 1) a slender rounded rod with tapered ends, used in hand spinning to twist and wind fibres from a mass of wool, flax, etc. held on a distaff. 2) a rod or pin serving as an axis that revolves or on which something revolves. 3) a turned… …   English terms dictionary

  • spindle — spindlelike, adj. /spin dl/, n., adj., v., spindled, spindling. n. 1. a rounded rod, usually of wood, tapering toward each end, used in hand spinning to twist into thread the fibers drawn from the mass on the distaff, and on which the thread is… …   Universalium


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.