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Larynx - Anatomy & Physiology (view source)
Revision as of 08:59, 29 July 2008
, 08:59, 29 July 2008no edit summary
*Form part of the glottis
*Form part of the glottis
===Vestibular folds
===Vestibular folds===
*Rostral part of laryngeal floor to arytenoid cartilages
*Rostral part of laryngeal floor to arytenoid cartilages
===Cricothryroid muscle===
===Cricothryroid muscle===
*Innervated by the cranial laryngeal nerve a branch of the vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]])
*Moves cricoid and arytenoid cartilages caudally
*Tenses vocal folds
===Dorsal cricoarytenoid muscle===
===Dorsal cricoarytenoid muscle===
*Dorsal surface of cricoid cartilage to arytenoid cartilage
*Abducts vocal process and therefore vocal fold
*Widens glottis
===Lateral cricoarytenoid muscle===
===Lateral cricoarytenoid muscle===
*Adducts vocal processes
*Narrows the glottis
===Thyroarytenoid muscle===
===Thyroarytenoid muscle===
*Laryngeal floor to the thyroid cartilage and arytenoid cartilage
*Alters the tension of the vocal and vestibular folds
*Forms part of the sphincter muscular arrangement
===Transverse arytenoid muscle===
===Transverse arytenoid muscle===
*Completes the muscular sphincter arrangment
*Spans the arytenoid cartilages
==Lymphatics==
==Lymphatics==
*
*Lymphoid tissue present
==Histology==
==Histology==
*In the ventricles, there is a high density of mucous glands
*In the ventricles, there is a high density of mucous glands
*Stratified squamous epithelium rostrally around laryngeal entrance
*Stratified squamous epithelium rostrally around laryngeal entrance