Cricothyroid joint
Cricothyroid Joint
The Cricothyroid Joint (pronunciation: /kriːkoʊˈθaɪrɔɪd ˈdʒɔɪnt/) is a pivotal type of synovial joint that connects the cricoid cartilage and the thyroid cartilage in the larynx.
Etymology
The term "Cricothyroid" is derived from the Greek words "krikos" meaning ring and "thyreos" meaning shield, referring to the ring-shaped cricoid cartilage and the shield-like thyroid cartilage.
Anatomy
The Cricothyroid Joint is formed by the articulation of the cricoid cartilage and the thyroid cartilage. It allows for the tilting and sliding movements of the thyroid cartilage, which are essential for the modulation of vocal pitch.
Function
The primary function of the Cricothyroid Joint is to adjust the tension of the vocal folds. By tilting the thyroid cartilage, the joint stretches the vocal folds, increasing their tension and raising the pitch of the voice.
Related Terms
- Cricoid Cartilage: The ring-shaped cartilage located at the base of the larynx.
- Thyroid Cartilage: The largest cartilage of the larynx, forming the "Adam's apple".
- Synovial Joint: A type of joint that allows for a wide range of motion, characterized by the presence of a synovial cavity.
- Vocal Folds: Also known as vocal cords, these are folds of mucous membrane that vibrate to produce sound.
External links
- Medical encyclopedia article on Cricothyroid joint
- Wikipedia's article - Cricothyroid joint
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