https://wikimd.com/index.php?action=history&feed=atom&title=Transversus_thoracis_muscle 2026-04-16T12:15:58Z Revision history for this page on the wiki MediaWiki 1.44.2 https://wikimd.com/index.php?title=Transversus_thoracis_muscle&diff=5796315&oldid=prev 2024-05-19T18:06:43Z

<p>CSV import</p> <p><b>New page</b></p><div>[[file:Transversus_thoracis.png|thumb|left]] [[file:Gray503.png|thumb|left]] [[file:Gray819.png|thumb|right]] {{Infobox muscle<br /> | Name = Transversus thoracis muscle<br /> | Latin = Musculus transversus thoracis<br /> | Image = <br /> | Caption = <br /> | Origin = [[Sternum]] and [[xiphoid process]]<br /> | Insertion = [[Costal cartilages]] of ribs 2-6<br /> | Blood = [[Internal thoracic artery]]<br /> | Nerve = [[Intercostal nerves]]<br /> | Action = Depresses the ribs<br /> | Antagonist = [[External intercostal muscles]]<br /> }}<br /> <br /> The &#039;&#039;&#039;transversus thoracis muscle&#039;&#039;&#039; (also known as the &#039;&#039;&#039;triangularis sterni&#039;&#039;&#039;) is a thin plane of muscular and tendinous fibers situated upon the inner surface of the front wall of the [[chest]]. It is part of the [[anterior thoracic wall]] and plays a role in the movement of the [[ribs]] during respiration.<br /> <br /> == Anatomy ==<br /> The transversus thoracis muscle originates from the posterior surface of the lower part of the [[sternum]], the [[xiphoid process]], and the [[costal cartilages]] of the lower three or four true ribs. It inserts into the inner surface of the costal cartilages of the second to the sixth ribs.<br /> <br /> == Innervation ==<br /> The muscle is innervated by the [[intercostal nerves]], which are the anterior rami of the thoracic spinal nerves.<br /> <br /> == Blood Supply ==<br /> The blood supply to the transversus thoracis muscle is primarily provided by the [[internal thoracic artery]], which runs along the inner surface of the thoracic wall.<br /> <br /> == Function ==<br /> The primary function of the transversus thoracis muscle is to depress the ribs, which aids in forced expiration. This action is antagonistic to the [[external intercostal muscles]], which elevate the ribs during inspiration.<br /> <br /> == Clinical Significance ==<br /> The transversus thoracis muscle can be involved in various clinical conditions, including [[thoracic outlet syndrome]] and [[costochondritis]]. It may also be encountered during surgical procedures involving the thoracic cavity.<br /> <br /> == See Also ==<br /> * [[Intercostal muscles]]<br /> * [[Respiratory system]]<br /> * [[Thoracic cavity]]<br /> * [[Sternum]]<br /> <br /> == References ==<br /> {{Reflist}}<br /> <br /> {{Muscles of the torso}}<br /> {{medicine-stub}}<br /> <br /> [[Category:Muscles of the torso]]<br /> [[Category:Respiratory system]]<br /> [[Category:Thoracic anatomy]]</div>

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