depressor

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Related to depressor muscle: extensor muscle, flexor muscle, supinator muscle

depressor

[di′pres·ər]
(anatomy)
A muscle that draws a part down.
(chemical engineering)
An agent that prevents or retards a chemical reaction or process.
References in periodicals archive ?
This appliance relies on the patients depressor muscles to depress the mandible.
The purpose of this research was: 1) to discover if surface electrode EMG is a reliable indicator of the activity of the laryngeal depressor muscles; 2) to test the usefulness of EMG biofeedback in teaching singers to activate the laryngeal depressor muscles and to maintain the lower laryngeal posture while singing; and 3) to determine if the achievement of said laryngeal posture improves the perceived quality of the sung tone, or changes any scientifically measureable components of the sound spectrum.
The reduction of size is already a fact in the clear timbre, where no infrahyoideous muscles came into action to counteract the action of the arytenoideous muscles; but it is especially striking, if we produce the sounds in the sombre timbre [voix sombree, voix mixte]; the lips of the glottis must then, by their own contractive force, resist not only the column of air, but also the opposed and considerable force of the depressor muscles, which tend to open the thyroid cartilage and to separate these same lips.