*Innervated by the caudal laryngeal nerve a branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]])
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The transverse arytenoid muscle is innervated by the '''caudal laryngeal nerve''', a branch of the vagus nerve ([[Cranial Nerves - Anatomy & Physiology|CN X]]). It completes the '''muscular sphincter arrangment'''. It spans the '''arytenoid cartilages'''.
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*Completes the muscular sphincter arrangment
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*Spans the arytenoid cartilages
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[[Image:Pharynx Anatomy.jpg|thumb|right|250px|Pharynx Labelled - Copyright C.Clarkson and T.F.Fletcher University of Minnesota]]
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[[Image:Pharynx Anatomy.jpg|thumb|right|150px|Pharynx Labelled - Copyright C.Clarkson and T.F.Fletcher University of Minnesota]]