Crista terminalis
Updates to Article Attributes
The crista terminalis is a smooth muscular ridge in the superior aspect of the right atrium, formed following resorption of the right valve of the sinus venosus. It represents the junction between the sinus venarum, the "smooth" portion of the right atrium derived from the embryologic sinus venosus, and the heavily trabeculated right atrial appendage.
Coursing between the caval orifices, it divides the pectinate muscle origin and the right atrial appendages in the right atrium. Its identification is significant in the determination of atrial situs.
Radiographic features
Echocardiography, CT and MRI
Cirsta terminalis is depicted as a linear structure in the posterolateral right atrial wall. It divides the right atrium into smooth posteromedial and trabeculated anterolateral portions.
Related pathology
While its presence is of no pathologic significance, unusual prominence of the crista terminalis has been associated with;
-
atrial fibrillation and/or flutter
- implicated as the ectopic focus of arrythmogenesis
- inappropriate sinus tachycardia (IST) 2
-<p>The <strong>crista terminalis </strong>is a smooth muscular ridge in the superior aspect of the <a href="/articles/right-atrium">right atrium</a>, formed following resorption of the right valve of the <a href="/articles/sinus-venosus">sinus venosus</a>. It represents the junction between the <a href="/articles/sinus-venarum">sinus venarum</a>, the "smooth" portion of the right atrium derived from the embryologic sinus venosus, and the heavily trabeculated <a href="/articles/right-atrial-appendage">right atrial appendage</a>.</p><p>Coursing between the <a href="/articles/inferior-vena-cava-1">caval</a> orifices, it divides the <a href="/articles/pectinate-muscles">pectinate</a> muscle origin and the right atrial appendages in the right atrium. Its identification is significant in the <a href="/articles/determination-of-atrial-situs">determination of atrial situs</a>.</p><h4>Related pathology</h4><p>While its presence is of no pathologic significance, unusual prominence of the crista terminalis has been associated with;</p><ul>- +<p>The <strong>crista terminalis </strong>is a smooth muscular ridge in the superior aspect of the <a href="/articles/right-atrium">right atrium</a>, formed following resorption of the right valve of the <a href="/articles/sinus-venosus">sinus venosus</a>. It represents the junction between the <a href="/articles/sinus-venarum">sinus venarum</a>, the "smooth" portion of the right atrium derived from the embryologic sinus venosus, and the heavily trabeculated <a href="/articles/right-atrial-appendage">right atrial appendage</a>.</p><p>Coursing between the <a href="/articles/inferior-vena-cava-1">caval</a> orifices, it divides the <a href="/articles/pectinate-muscles">pectinate</a> muscle origin and the right atrial appendages in the right atrium. Its identification is significant in the <a href="/articles/determination-of-atrial-situs">determination of atrial situs</a>.</p><h4>Radiographic features</h4><h5>Echocardiography, CT and MRI </h5><p>Cirsta terminalis is depicted as a linear structure in the posterolateral right atrial wall. It divides the right atrium into smooth posteromedial and trabeculated anterolateral portions.</p><h4>Related pathology</h4><p>While its presence is of no pathologic significance, unusual prominence of the crista terminalis has been associated with;</p><ul>
References changed:
- 3. Prabhakar Rajiah, James MacNamara, Abhishek Chaturvedi, Ravi Ashwath, Nicholas L. Fulton, Harold Goerne. Bands in the Heart: Multimodality Imaging Review. (2019) RadioGraphics. 39 (5): 1238-1263. <a href="https://doi.org/10.1148/rg.2019180176">doi:10.1148/rg.2019180176</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/31373865">Pubmed</a> <span class="ref_v4"></span>
Tags changed:
- rg_39_5_edit
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