| Terminal sulcus | |
|---|---|
| Details | |
| Identifiers | |
| Latin | sulcus terminalis cordis |
| TA98 | A12.1.01.013 |
| TA2 | 3946 |
| FMA | 9287 |
| Anatomical terminology | |
Theterminal sulcus is a groove on the outer surface of theright atrium of theheart marking the transition between thesinus venarum cavarum (which has a distinct embryological origin) and the rest of the right atrium (which featurespectinate muscles on its inner surface). The terminal sulcus corresponds to the position of theterminal crest on the inner surface of the right atrium. The terminal sulcus (and crest) indicate the position of thesinoatrial node.[1]
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The terminal sulcus extends from the front of thesuperior vena cava to the front of theinferior vena cava, and represents the line of union of thesinus venosus of theembryo with theprimitive atrium.
The superior border of the terminal sulcus designates the transverse plane in which theSA node resides. The inferior border designates the transverse plane in which theAV node resides.[2]
This article incorporates text in thepublic domain frompage 529 of the 20th edition ofGray's Anatomy(1918)
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