View 3 Hour Detailed Portland Weather Forecast for Today. Portland 4 â 7 Day Weather Forecast Summary: Heavy rain (total 37mm), heaviest during Mon afternoon. Warm (max 24Â°C on Mon afternoon, min 14Â°C on Tue night). Winds decreasing (fresh winds from the SSE on Sun night, light winds from the N by Mon afternoon).
noun, plural: spindles. (1) A collection of minute fibers composed of microtubules, which are prominent during cell division, as mitotic spindle or mitotic apparatus''. (2) A specialized innervated muscle structure involved in the reflex action and in proprioception, as muscle spindle. (3) A species of a poisonous shrub or small tree of the genus Euonymus, originally used for making spindles used for spinning wool. (4) An EEG waveform that occurs during sleep, as sleep spindle.
Quick Answer. The spindle fibers are used to control the movement and segregation of chromosomes in both the mitosis cell division and meiosis cell division. The spindles are referred to as the spindle apparatus and also mitotic spindle during mitosis or the meiotic spindle during meiosis. In both cases, the spindles serve the same purpose, which is to separate the daughter cells and their chromosomes.