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Larynx

Larynx

The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids, corniculates, and...

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Related Experiment Video

Updated: May 12, 2026

Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

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Published on: November 25, 2017

Phonosurgery training using Japanese deer larynx.

Atsushi Suehiro¹, Tsuyoshi Kojima¹, Ken Iwanaga¹

¹Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

Auris, Nasus, Larynx

|May 26, 2024

Summary

The Japanese deer larynx closely resembles the human larynx in structure and function. This makes it an ideal, cost-effective model for phonosurgery training and vocal fold surgery practice.

Keywords:

Animal training Arytenoid adduction Japanese deer Phonosurgery training Thyroplasty

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Last Updated: May 12, 2026

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Area of Science:

Comparative anatomy
Surgical education

Background:

Phonosurgery requires realistic anatomical models for effective training.
The Japanese deer larynx is currently used in phonosurgery training at the institution.

Purpose of the Study:

To compare the anatomical features of the Japanese deer larynx with the human larynx.
To assess the suitability of the Japanese deer larynx for vocal surgery practice.

Main Methods:

Comparative analysis of 30 Japanese deer and 51 human donor larynges.
Evaluation of laryngeal framework, cartilage dimensions, vocal cord length, and arytenoid cartilage.
Visual analysis of vocal fold dynamics during muscle activation.

Main Results:

Japanese deer larynx size is intermediate between human males and females.
Vocal fold adduction, abduction, and extension mechanisms function similarly to humans.
Key laryngeal muscle actions mimic human vocal fold behavior.

Conclusions:

The Japanese deer larynx exhibits significant morphological similarities to the human larynx.
Its structural and functional parallels make it suitable for dissection and surgical simulation.
Availability and low cost position the Japanese deer larynx as a prime candidate for phonosurgery training.