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The cricothyroid muscle is the only tensor muscle of the larynx aiding with phonation . It is innervated by the superior laryngeal nerve. Its action tilts the thyroid forward to help tense the vocal cords , thus increasing the pitch of the voice.
Structure [ edit ]
The cricothyroid muscle is a fan-shaped muscle situated at the outer surface of the larynx.[1]
The cricothyroid muscle originates from the anterolateral aspect of the cricoid cartilage .[2]
Insertion [ edit ]
The cricothyroid muscle splits into two groups or parts. The oblique part travels posterolaterally and inserts onto the inferior cornu of the thyroid cartilage . The straight part travels posterosuperiorly and inserts onto the inferior margin of the lamina of the thyroid cartilage .[1]
Innervation [ edit ]
The cricothyroid muscle is innervated by the external branch of the superior laryngeal nerve (a branch of the vagus nerve ). It is the only muscle innervated by this nerve.[3] [4]
Function [ edit ]
The cricothyroid muscle produces tension and elongation of the vocal cords .[3] [5] cricoid cartilage and tilt back the upper border of the cricoid cartilage lamina.[3] [5] [3] [1] phonation .[3] posterior cricoarytenoid muscles .[6]
Clinical significance [ edit ]
The cricothyroid muscles may be injected with botulinum toxin whilst treating spasmodic dysphonia .[6] electromyography .[6]
Additional images [ edit ]
See also [ edit ]
References [ edit ]
^ "Cricothyroid" . www.meddean.luc.edu . Retrieved 2022-06-06 .
^ a b c d e Duarte, Robert A.; Argoff, Charles E. (2009-01-01), Argoff, Charles E.; McCleane, Gary (eds.), "Chapter 19 - Glossopharyngeal and other Facial Neuralgias" , Pain Management Secrets (Third Edition) , Philadelphia: Mosby, pp. 116–118, ISBN 978-0-323-04019-8 , retrieved 2021-01-12
^ Kaplan, Edwin L.; Angelos, Peter; James, Benjamin C.; Nagar, Sapna; Grogan, Raymon H. (2016-01-01), Jameson, J. Larry; De Groot, Leslie J; de Kretser, David M.; Giudice, Linda C. (eds.), "Chapter 96 - Surgery of the Thyroid" , Endocrinology: Adult and Pediatric (Seventh Edition) , Philadelphia: W.B. Saunders, pp. 1666–1692.e4, doi :10.1016/b978-0-323-18907-1.00096-2 , ISBN 978-0-323-18907-1 , retrieved 2021-01-12
^ a b Berke, Gerald S.; Long, Jennifer L. (2010-01-01), Brudzynski, Stefan M. (ed.), "Chapter 10.1 - Functions of the larynx and production of sounds" Handbook of Behavioral Neuroscience , Handbook of Mammalian Vocalization, vol. 19, Elsevier, pp. 419–426, doi :10.1016/B978-0-12-374593-4.00038-3 , retrieved 2021-01-12
^ a b c Bentivoglio, Anna Rita; Fasano, Alfonso; Albanese, Alberto (2009-01-01), Jankovic, Joseph; Albanese, Alberto; Atassi, M. Zouhair; Dolly, J. Oliver (eds.), "10 - Botulinum Neurotoxin in Tremors, Tics, Hemifacial Spasm, Spasmodic Dysphonia, and Stuttering" Botulinum Toxin , Philadelphia: W.B. Saunders, pp. 112–130, doi :10.1016/b978-1-4160-4928-9.00010-x , ISBN 978-1-4160-4928-9 , retrieved 2021-01-12
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Cricothyroid_muscle&oldid=1222223500 " C a t e g o r y : ● M u s c l e s o f t h e h e a d a n d n e c k H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n i s d i f f e r e n t f r o m W i k i d a t a ● A r t i c l e s w i t h T A 9 8 i d e n t i f i e r s
● T h i s p a g e w a s l a s t e d i t e d o n 4 M a y 2 0 2 4 , a t 1 7 : 4 2 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
