retraction fibres

retraction fibres
Thin projections from crawling cells associated with areas where the cell body is becoming detached from the substratum, but focal adhesions persist. Usually contain a bundle of microfilaments that are under tension.

Dictionary of molecular biology. 2004.

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  • rétraction — [ retraksjɔ̃ ] n. f. • 1515; « action de se retirer » fin XIVe; lat. retractio 1 ♦ Acte par lequel certains animaux, certains organes, en présence de situations ou d excitations déterminées, se contractent et se déforment de façon à occuper le… …   Encyclopédie Universelle

  • retraction ring — a depression in the uterine wall marking the junction between the actively contracting muscle fibres of the upper segment of the uterus and the muscle fibres of the lower segment. This depression is not always visible and is normal. In obstructed …   Medical dictionary

  • retraction ring — a depression in the uterine wall marking the junction between the actively contracting muscle fibres of the upper segment of the uterus and the muscle fibres of the lower segment. This depression is not always visible and is normal. In obstructed …   The new mediacal dictionary

  • retraction — 1. A shrinking, drawing back, or pulling apart. 2. Posterior movement of teeth, usually with the aid of an orthodontic appliance. [L. retractio, a drawing back] gingival r. 1. lateral movement of the gingival …   Medical dictionary

  • retraction — n. 1) (in obstetrics) the quality of uterine muscle fibres remaining shortened after contracting during labour. This results in a gradual progression of the fetus downwards through the pelvis. The basal portion of the uterus becomes thicker and… …   The new mediacal dictionary

  • respiration, human — ▪ physiology Introduction       the process by which oxygen is taken up and carbon dioxide discharged. The design of the respiratory system  The human gas exchanging organ, the lung, is located in the thorax, where its delicate tissues are… …   Universalium

  • RÉGÉNÉRATION ET CICATRISATION — Tous les êtres vivants sont capables, à des degrés divers, de réparer les dommages causés à l’organisme. Dans son sens le plus large, le terme de régénération désigne tous les phénomènes de réparation au cours desquels un individu retrouve son… …   Encyclopédie Universelle

  • rétracter — 1. rétracter [ retrakte ] v. tr. <conjug. : 1> • 1370; lat. retractare « retirer » 1 ♦ Littér. Revenir sur (ce qu on a dit ou fait). Rétracter une proposition, une opinion, un aveu, une accusation. ⇒ désavouer; rétractation. Je rétracte ce… …   Encyclopédie Universelle

  • avoidance behaviour — Type of activity, exhibited by animals exposed to adverse stimuli, in which the tendency to flee or to act defensively is stronger than the tendency to attack. Vision is the sense that most often produces avoidance behaviour (e.g., small birds… …   Universalium

  • INTÉGRATION NERVEUSE ET NEUROHUMORALE — Parler d’intégration nerveuse, c’est mettre l’accent sur les opérations accomplies par le système nerveux en son propre sein ou dirigées vers le monde extérieur plutôt que sur la description de son organisation structurale ou l’analyse, au niveau …   Encyclopédie Universelle

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