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Thyroarytenoid muscle

Encyclopedia : T : TH : THY : Thyroarytenoid muscle


Muscles of the larynx, seen from above. |- style="text-align: center;" class="hiddenStructure" | colspan="2" |

|- style="text-align: center; line-height: 1;" class="hiddenStructure" | colspan="2" | |- class="hiddenStructure" |Latin |colspan="2"| |- class="hiddenStructure" | |colspan="2"|[subject #236 ] |- style="vertical-align:top;" |Origin: |colspan="2"| |- style="vertical-align:top;" |Insertion: |colspan="2"| |- style="vertical-align:top;" | |colspan="2"| |- style="vertical-align:top;" |Nerve: |colspan="2"|recurrent laryngeal branch of the vagus |- style="vertical-align:top;" |Action: |colspan="2"|helps to adduct the vocal folds during speech |- class="hiddenStructure" |Antagonist: |colspan="2"| |- class="hiddenStructure" |MeSH |colspan="2"|[] |- class="hiddenStructure" |Dorlands/Elsevier |colspan="2"|[/] |} The Thyreoarytænoideus (Thyroarytenoid) is a broad, thin, muscle which lies parallel with and lateral to the vocal fold, and supports the wall of the ventricle and its appendix.

It arises in front from the lower half of the angle of the thyroid cartilage, and from the middle cricothyroid ligament.

Its fibers pass backward and lateralward, to be inserted into the base and anterior surface of the arytenoid cartilage.

The lower and deeper fibers of the muscle can be differentiated as a triangular band which is inserted into the vocal process of the arytenoid cartilage, and into the adjacent portion of its anterior surface; it is termed the Vocalis, and lies parallel with the vocal ligament, to which it is adherent.

External links

Thyroarytenoid muscle
Muscles of the — — — — — LIST OF ALL MUSCLES

scalp: occipitofrontalis (occipitalis, frontalis) | (Gray's [s105])

eyelid: orbicularis oculi - corrugator supercilii - depressor supercilii | (Gray's [s106])

nose: procerus - nasalis - depressor septi nasi - dilatator naris posterior - dilatator naris anterior - levator labii superioris alaeque nasi | (Gray's [s107])

mouth: levator labii superioris - levator anguli oris - zygomaticus (major, minor) - mentalis - depressor labii inferioris - depressor anguli oris - buccinator - orbicularis oris - risorius | (Gray's [s108])

mastication: masseter - temporalis - pterygoid (lateral, medial) | (Gray's [s109])

extraocular: levator palpebrae superioris - rectus (superior, inferior, medial, lateral) - oblique (superior, inferior) | intraocular: ciliary - iris dilator - iris sphincter | (Gray's [s227])

hearing: auricularis anterior - stapedius - tensor tympani | (Gray's [s228]-Gray's [s232])

larynx: cricothyroid - posterior cricoarytenoid - lateral cricoarytenoid - arytenoid - thyroarytenoid | (Gray's [s236])

tongue: extrinsic (genioglossus - hyoglossus - chondroglossus - styloglossus) intrinsic (superior longitudinal - inferior longitudinal - transversus - verticalis) | (Gray's [s242])

palate: levator veli palatini - tensor veli palatini - musculus uvulae - palatoglossus - palatopharyngeus | (Gray's [s243])

pharynx: pharyngeal constrictor (inferior, middle, superior) - stylopharyngeus - salpingopharyngeus | (Gray's [s244])

 


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