Why do the vocal cords vibrate?

Dec 02, 2022 Source: Cainiu Health

Dr. Xu Gang

Introduction

The vocal cords vibrate, a process that typically involves various bodily functions and physiological mechanisms, such as the vocal cord muscles, laryngeal structures, vocal cord tension, neural control, and airflow. If discomfort in the vocal cords occurs, patients are advised to seek medical attention promptly for appropriate diagnosis and treatment. Do not arbitrarily increase medication dosage, and be aware of potential drug side effects.

Under normal circumstances, vocal cord vibration involves various bodily functions and physiological processes, such as vocal cord muscles, laryngeal structure, vocal cord tension, neural control, and airflow. A detailed analysis is as follows:

1. Vocal Cord Muscles

The vocal cords are typically composed of muscles, tendons, and other soft tissues. Due to their inherent tension, they may vibrate against each other when air passes through.

2. Laryngeal Structure

The vocal cords are generally formed by an elastic membrane and muscles located between the thyroid cartilage and cricoid cartilage, situated in the throat area. They are influenced by multiple structures within the pharynx and larynx that help regulate vocal cord vibration.

3. Vocal Cord Tension

When a person is overly stressed mentally, the vocal cords may also become tense, potentially leading to rapid vibrations and a higher-pitched voice. When the vocal cords are relaxed, the vibration rate slows down, resulting in a lower voice pitch.

4. Neural Control

The muscles of the vocal cords are usually controlled by the central nervous system in the brain. When a person intends to produce sound, the recurrent laryngeal nerve in the brain sends signals to the vocal cord muscles, causing them to contract and generate sound.

5. Airflow

During respiration, airflow passing through the larynx may cause the vocal cords to vibrate. For example, during inhalation, air entering the lungs becomes pressurized, which can push the vocal cords forward.

If vocal cord discomfort occurs, patients are advised to seek medical attention promptly for appropriate diagnosis and treatment. Do not arbitrarily increase medication dosage, and be mindful of potential drug side effects.

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Can vocal cords recover after a prolonged period of voice rest?

Whether the vocal cords can recover after prolonged voice rest depends on the specific circumstances. Long-term voice rest can reduce stimulation to the vocal cords, allowing them to remain inactive and fully rested. As a result, symptoms such as swelling and congestion may improve, and spontaneous recovery is possible. However, if the vocal cord lesion is severe or the vocal polyp is large, the vocal cords generally will not recover even with prolonged voice rest.

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What is vocal cord squamous papilloma, and what should be done about it?

Laryngeal squamous papilloma may be caused by factors such as unhealthy lifestyle habits, environmental irritation, improper diet, low immunity, and human papillomavirus (HPV) infection. It is recommended to seek medical attention promptly. Under medical guidance, the condition can be improved through general management, medication, and other treatments. Specifically: in daily life, one should ensure adequate rest and sufficient sleep, and avoid staying up late.