coupling medicine
1coupling interval — the length of time between an ectopic beat and the sinus beat preceding it; in an arrhythmia characterized by such beats, the intervals may be constant (fixed coupling intervals) or inconstant (variable coupling intervals) …
2fixed coupling — coupling in which the premature heart beats follow the preceding normal beats at identical intervals …
3variable coupling — coupling in which the interval between extrasystoles and the sinus beats preceding them is not constant …
4coupling — 1. Usually the result of the repeated pairing of a normal sinus beat with a ventricular extrasystole. 2. See c. phase. 3. A condition in which one or more products of a reaction are the subsequent reactants (or substrates) of a second reaction.… …
5coupling agent — a substance used to coat filler particles in a resin matrix composite so that the particles bind to the resin matrix …
6excitation-contraction coupling — the coupling of the action potential to muscle constriction by means of calcium ions which diffuse rapidly into the myofibrils and catalyze the chemical reactions that promote the contractile sliding of actin and myosin filaments …
7chemiosmotic coupling — chemosmosis …
8F0,F1 — coupling factor …
9phase — 1. A stage in the course of change or development. 2. A homogeneous, physically distinct, and separable portion of a heterogeneous system; e.g., oil, gum, and water are three phases of an emulsion. 3. The time relat …
10repulsion — 1. The act of repelling or driving apart, in contrast to attraction. 2. Strong dislike; aversion; repugnance. 3. Coupling phase of genes at linked loci that are borne on opposite chromosomes. See coupling phase. [L. re pello, pp. pulsus, to drive …