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Larynx - Anatomy & Physiology (view source)
Revision as of 15:54, 14 August 2009
, 15:54, 14 August 2009no edit summary
{{toplink
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|linkpage =Cardiorespiratory System - Anatomy & Physiology
|linkpage =Cardiorespiratory System - Anatomy & Physiology
|linktext =Cardiorespiratory System
|linktext =Cardiorespiratory System
===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]])
*Innervated by the cranial laryngeal nerve a branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])
*Moves cricoid and arytenoid cartilages caudally
*Moves cricoid and arytenoid cartilages caudally
*Tenses vocal folds
*Tenses vocal folds
===Dorsal cricoarytenoid muscle===
===Dorsal cricoarytenoid muscle===
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]])
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])
*Dorsal surface of cricoid cartilage to arytenoid cartilage
*Dorsal surface of cricoid cartilage to arytenoid cartilage
*Abducts vocal process and therefore vocal fold
*Abducts vocal process and therefore vocal fold
===Lateral cricoarytenoid muscle===
===Lateral cricoarytenoid muscle===
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]])
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])
*Adducts vocal processes
*Adducts vocal processes
*Narrows the glottis
*Narrows the glottis
===Thyroarytenoid muscle===
===Thyroarytenoid muscle===
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]])
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])
*Laryngeal floor to the thyroid cartilage and arytenoid cartilage
*Laryngeal floor to the thyroid cartilage and arytenoid cartilage
*Alters the tension of the vocal and vestibular folds
*Alters the tension of the vocal and vestibular folds
===Transverse arytenoid muscle===
===Transverse arytenoid muscle===
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]])
*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])
*Completes the muscular sphincter arrangment
*Completes the muscular sphincter arrangment
*Spans the arytenoid cartilages
*Spans the arytenoid cartilages
==Innervation==
==Innervation==
*Branches of the vagus nerve ([[Nervous System - CNS - Anatomy & Physiology#Innervation - Cranial Nerves|CN X]])
*Branches of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])
**Cranial larygeal nerve
**Cranial larygeal nerve
***Internal branch innervates mucosa
***Internal branch innervates mucosa