Cricoarytenoid joint
Cricoarytenoid Joint
The Cricoarytenoid Joint (pronunciation: /ˌkraɪkoʊˌærɪˈtɛnɔɪd ˈdʒɔɪnt/) is a type of synovial joint found in the larynx. It is formed between the base of the arytenoid cartilage and the cricoid cartilage.
Etymology
The term "Cricoarytenoid" is derived from the Greek words "krikos" meaning ring and "arytaina" meaning ladle, referring to the shapes of the cricoid cartilage and arytenoid cartilage respectively. The term "joint" comes from the Latin "iunctus", meaning joined or connected.
Function
The primary function of the Cricoarytenoid Joint is to facilitate the movement of the vocal cords. It allows for the rotation and sliding of the arytenoid cartilages, which in turn controls the tension and position of the vocal cords. This joint is crucial for speech and breathing.
Related Terms
- Synovial Joint: A type of joint that is surrounded by a thick flexible membrane forming a sac into which is secreted a viscous fluid that lubricates the joint.
- Larynx: Also known as the voice box, it is an organ in the top of the neck involved in breathing, producing sound and protecting the trachea against food aspiration.
- Arytenoid Cartilage: A pair of small three-sided pyramids which form part of the larynx, to which the vocal cords are attached.
- Cricoid Cartilage: The only complete ring of cartilage around the trachea, it forms the back part of the voice box.
External links
- Medical encyclopedia article on Cricoarytenoid joint
- Wikipedia's article - Cricoarytenoid joint
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