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1. an act of moving; called also motion.
2. an act of defecation.
active movement movement produced by the person's own muscles.
ameboid movement movement like that of an ameba, accomplished by protrusion of cytoplasm of the cell.
associated movement movement of parts that act together, as the eyes.
brownian movement the peculiar, rapid, oscillatory movement of fine particles suspended in a fluid medium; called also molecular movement.
circus movement the propagation of an impulse again and again through tissue already previously activated by it; the term is usually reserved for the reentry involving an accessory pathway.
molecular movement brownian movement.
passive movement a movement of the body or of the extremities of a patient performed by another person without voluntary motion on the part of the patient.
vermicular m's the wormlike movements of the intestines in peristalsis.
a contraction or excitation wave traveling continuously in circular fashion around a ring of muscle or through the wall of the heart.
Synonym(s): circus rhythm
1 an unusual and involuntary rolling or somersaulting caused by injured neural structures that control body posture, such as the cerebral pedicles or the vestibular apparatus.
2 an unusual circular gait caused by injury to the brain or spinal cord.
3 a mechanism associated with the excitatory wave of the atrium of the heart and atrial flutter or fibrillation. The wave travels a circular path characterized by a gap between the refractory and the excitatory tissue, usually resulting in conduction of only a fraction of the impulses to the ventricle.