Weights of tensor, abductor and adductor muscles of the human larynx

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Original Article

Author Details : Mohini Madhukarrao Joshi*, S. D. Joshi, S. S. Joshi, Sandeep Pakhale

Volume : 11, Issue : 4, Year : 2024

Article Page : 216-220

https://doi.org/10.18231/j.ijcap.2024.046

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Abstract

Background: The intrinsic muscles of the larynx interconnect the laryngeal cartilages and help in their mobility. Three muscles cricothyroid tensor of vocal cord, supplied by external laryngeal nerve. Posterior cricoarytenoid abductor of vocal cord, Lateral cricoarytenoid adductor of vocal cord both these muscles are supplied by recurrent laryngeal nerve. This study is important in various clinical laryngeal palsies.A good understanding of the anatomy and the knowledge of laryngeal muscles is important.
Aim & Objectives: Aim of the present study was to measure the weight of cricothyroid (Tensor), posterior cricoarytenoid (Abductor) and lateral cricoarytenoid (Adductor) muscles. Proposal of practical use of data on the basis of this study.
Materials and Methods Fifty laryngeal preparations from adult cadavers of Western India were assessed. Sections were prepared via dissection and the removed muscles weighed & statistical analysis was done.
Results: The mean weight of the cricothyroid on right side was 309.68±102.94 on left side was 332.81±116.7. The mean weight of the posterior cricotarytenoid on right side was 230.01±60.93 on left side was 231.06±61.35.The mean weight of the lateral cricotarytenoid on right side was 60.56±24.10 on left side was 63.48±19.67.
Conclusion: Wide individual variation in weight of the muscles was observed. The Average weight of thecricothyroid muscle (tensor) was more than the Posterior cricoarytenoid (abductor) & Lateral cricoarytenoid muscle (adductor). The Average weight of the Posterior cricoarytenoid (abductor) was more as compared to Lateral cricoarytenoid muscle (adductor).
 

Keywords: Larynx, Muscles, Tensor, Adductor muscles.

How to cite : Joshi M M, Joshi S D, Joshi S S, Pakhale S, Weights of tensor, abductor and adductor muscles of the human larynx. Indian J Clin Anat Physiol 2024;11(4):216-220

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