Ceratocricoid muscle: An embryological and anatomical study

Maranillo, Eva; Vázquez, Teresa; Mirapeix, Rosa M.; León, Xavier; McHanwell, Stephen; Quer, Miquel; Sañudo, José Ramón

doi:10.1002/ca.20795

Cited by 8 publications

(5 citation statements)

References 10 publications

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“…A general interpretation of the presence of a rich and varied innervation is that it permits a muscle, in this case the ATC fascicle, to carry out precise movements (Brodal, 1992). The main action of the muscle would appear to be participation in protective laryngeal reflexes (Maranillo et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

The clinical interest of the ary‐thyro‐cricoid fascicle

et al. 2011

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The aim of this work was to study the prevalence and form of the ary-thyro-cricoid (ATC) muscular fascicle, a variable muscular slip connecting the oblique and/or transverse arytenoid muscles with the thyroarytenoid (TA) and/or lateral cricoarytenoid (LCA) muscles resembling a sphincter encircling the glottis. Thirty larynges obtained from necropsies of individuals with no known laryngeal pathology were dissected. The ATC fascicle was observed in 96.7% of the larynges. It appeared bilaterally in 60% of subjects and unilaterally in 36.7%. The posterior attachment of the muscular slip was observed to be in common with either the transverse arytenoid (34%), or the oblique arytenoid (28%) or both muscles (38%). Its fibers terminated by intermingling with either those of the LCA muscle (10.6%), or the TA muscle (38.3%) or both (51.1%). These variable attachments mean that there are nine possible variants of this muscular fascicle. The ATC fascicle was supplied by branches originating bilaterally from the recurrent laryngeal (RLN) and internal laryngeal nerves. The existence of this ATC fascicle could explain the variable position (intermediate, paramedian or lateral) adopted by the vocal folds after lesion of the RLN. The bilateral disposition and innervation of the fascicle could also complicate the interpretation of electromyographic techniques used for testing laryngeal nerve function.

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Section: Discussionmentioning

confidence: 99%

The clinical interest of the ary‐thyro‐cricoid fascicle

et al. 2011

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“…It is a small muscular belly located on the posterior surface of the larynx, lateral to the posterior cricoarytenoid muscle. It has been proposed to derive from the cricothyroid or the posterior cricoarytenoid muscle (Luschka 1871;Maranillo et al 2009). It has been reported as a flat or as a fusiform muscle, constituted by one or two fascicles.…”

Section: Ceratoarytenoid Musclementioning

confidence: 99%

“…The external sphincter gives rise to the cricothyroid muscle, the thyroid cartilage and the inferior constrictor muscles of the pharynx; the internal sphincter is the origin of the rest of the intrinsic muscles and cartilages of the larynx (Fürbringer 1875;Kanthack 1892;Maranillo et al 2009Maranillo et al , 2011. The external sphincter gives rise to the cricothyroid muscle, the thyroid cartilage and the inferior constrictor muscles of the pharynx; the internal sphincter is the origin of the rest of the intrinsic muscles and cartilages of the larynx (Fürbringer 1875;Kanthack 1892;Maranillo et al 2009Maranillo et al , 2011.…”

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Laryngeal Muscles

Maranillo

Sañudo

2016

Bergman's Comprehensive Encyclopedia of Human Anatomic Variation

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“…In the literature, there are many studies concerning the structure of the larynx and its individual cartilages in adults [ 3 - 7 ], but fewer studies concern newborns, infants and children [ 8 - 11 ]. The smallest number of studies concerns the cartilages of the fetal larynx, and the few studies which are available have discrepancies [ 2 , 9 , 12 - 14 ].…”

Section: Introductionmentioning

confidence: 99%

Changes of laryngeal parameters during intrauterine life

et al. 2010

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Objective Increased care of fetal and neonatal airways has led to advances in neonatal medicine. The early diagnosis and treatment of respiratory diseases require a detailed knowledge of fetal airway anatomy and development. The aim of this study was to determine the anatomical development of the thyroid and cricoid cartilages and their structural variability during fetal life. Materials and methods The study was performed on the thyroid and cricoid cartilages of 55 human fetal larynges of both sexes, between the ages of 13 and 27 weeks of intrauterine life. Numerous measurements of the thyroid and cricoid cartilages were performed. Results Correlations between the obtained results were calculated in relation to the crown-rump (C-R) length of human fetuses and to sex. The structural variability of the thyroid and cricoid cartilages of human male and female fetuses in subsequent weeks of intrauterine life was observed. In both genders a correlation between laryngeal size and fetal crown-rump length, regardless of sex, was found. The thyroid cartilage presents a sexual dimorphism. Conclusions The results of this study can be useful in the analysis of prenatal examinations, and in planning the treatment of airway emergencies.

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Ceratocricoid muscle: An embryological and anatomical study

Cited by 8 publications

References 10 publications

The clinical interest of the ary‐thyro‐cricoid fascicle

The clinical interest of the ary‐thyro‐cricoid fascicle

Laryngeal Muscles

Changes of laryngeal parameters during intrauterine life

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