| reciprocal b. |
a cardiac impulse that in one cycle causes ventricular contraction, travels back toward the atria, then reexcites the ventricles; a series of such beats constitutes a reciprocal rhythm.
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| reciprocal f. |
a force applied by an orthodontic anchorage in which the resistance of one or more dental units is utilized to move one or more opposing dental units. Cf. reciprocal anchorage.
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| reciprocal g.’s |
complementary g's.
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| reciprocal i. |
the inhibition of one group of muscles on excitation of their antagonists, a phenomenon resulting from reciprocal innervation (q.v.).
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| reciprocal r. |
a cardiac dysrhythmia established by a sustained reentrant mechanism in which impulses traveling back toward the atria through the atrioventricular junction also travel forward to reexcite the ventricles; thus each cycle contains a reciprocal beat, with two ventricular contractions.
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