Encyclopedia entry
Cricoarytenoideus Posterior (Posterior Cricoarytenoid)
Abstract
An occasional band of muscle may be found in contact with the lower border of the posterior cricoarytenoid. The ceratocricoideus (of Merkle) (or keratocricoid) is a short muscle arising near the lower border of cricoid cartilage, a little behind the inferior cornu of the thyroid cartilage, and passing obliquely outward and upward to be inserted into the inferior cornu of the thyroid cartilage. This variation was found in seven of 32 (21.9%) bodies studied and it usually exists on one side of the body only. According to Hetherington, the incidence of this variation is actually about 17%.
An occasional band of muscle may be found in contact with the lower border of the posterior cricoarytenoid. The ceratocricoideus (of Merkle) (or keratocricoid) is a short muscle arising near the lower border of cricoid cartilage, a little behind the inferior cornu of the thyroid cartilage, and passing obliquely outward and upward to be inserted into the inferior cornu of the thyroid cartilage. This variation was found in seven of 32 (21.9%) bodies studied and it usually exists on one side of the body only. According to Hetherington, the incidence of this variation is actually about 17%.
Anatomical classification
- Systems:
- Muscular system
Content provenance
Adaptation
Adaptation of «Cricoarytenoideus Posterior (Posterior Cricoarytenoid) — Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System» by Ronald A. Bergman, Adel K. Afifi, Ryosuke Miyauchi. Source: https://www.anatomyatlases.org/AnatomicVariants/MuscularSystem/Text/C/45Cricoarytenoideus.shtml Original work distributed under the CC BY-NC-SA 4.0 licence (https://creativecommons.org/licenses/by-nc-sa/4.0/deed.it). Adaptation by Redazione AIVA. Changes from the original: Testo originale inglese riprodotto integralmente e riorganizzato nel formato scheda del portale (sintesi, testo, riferimenti), senza modificarne le affermazioni. La traduzione italiana non è ancora stata eseguita, e la pagina lo dichiara. Le figure non sono state copiate: sono collegate alla pagina d’origine. This publication is not approved or endorsed by the authors of the original work.
Licence
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