dilator

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Related to Dilator Muscle: ciliary muscle

dilator

[dī′lād·ər]
(physiology)
Any muscle, instrument, or drug causing dilation of an organ or part.
References in periodicals archive ?
It therefore directly stimulates effector cells such as the dilator muscle of the pupil if the concentration is sufficient and causes mydriasis.
Upper airway dilator muscle activity and recruitability
the dogs had no dilator muscle activity), During the apneic episode, he stimulated the dogs' phrenic nerve to trigger diaphragmatic contractions; each contraction caused the dog to inhale.
The intrinsic muscles are formed of a pair of dilator muscles and a pair of constrictor muscles.
Reflex arcs involving these upper airway dilator muscles are integrated with the central mechanisms that control ventilation and breathing.
Upper airway collapsibility may reflect the impaired function of upper airway dilator muscles such as the genioglossus muscle.
In addition to the typical muscular coat of the foregut, the pharynx has dilator muscles that aid in conveying food from the buccal cavity to the esophagus (Chapman 1985; Skaer 1993).