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The laryngeal adductor reflex (LAR) is an involuntary protective response to stimuli in the larynx. The superior laryngeal nerve (SLN) acts as the afferent limb and the recurrent laryngeal nerve (RLN) as the efferent limb of this reflex, which is modulated by the central nervous system.
30 paź 2023 · The intrinsic muscles of the larynx alter both the length and the tension placed upon the vocal cords as well as the rima glottidis. The adductor muscle group is made up of the lateral cricoarytenoid muscles and the transverse arytenoid muscles. The muscles that govern abduction are the posterior cricoarytenoid muscles.
1 lut 2023 · The lateral cricoarytenoid muscles are the major adductors of the vocal folds. They narrow the rima glottidis, modulating the tone and volume of speech. Attachments: Originates from the arch of the cricoid cartilage and attaches to the muscular process of the arytenoid cartilage. Actions: Adduction of the vocal folds.
1 lut 2023 · Spasmodic dysphonia (SD) is considered a rare focal laryngeal dystonia characterized by task-specific voice dysfluency resulting from selective intrinsic laryngeal musculature hyperfunction. Symptoms may be attenuated by a sensory trick.
3 kwi 2024 · The main abductor muscle of the larynx is the posterior cricoarytenoid (PCA). The cricothyroid and the TA/LCA muscles control vocal fold length, tension, and vocal frequency. The microanatomy of the vocal folds is complex and consists of the following layers, from superficial to deep: The epithelium. The superficial lamina propria.
17 lip 2024 · Muscles. The intrinsic laryngeal muscles serve various functions, many of which can be categorized by their action on the vocal ligament. The adductors are the thyroarytenoid (vocalis), lateral cricoarytenoid, and interarytenoid muscles.
21 lut 2024 · Adductors and abductors: The lateral cricoarytenoid muscles pull the muscular processes anteriorly which rotates the arytenoid cartilages so that the vocal processes swing medially. They are the principal adductors.
