Terminal sulcus (heart)

Terminal sulcus
Terminal sulcus
Details
Identifiers
Latin	Sulcus terminalis cordis
TA98	A12.1.01.013
TA2	3946
FMA	9287
	Anatomical terminology

The terminal sulcus is a groove on the outer surface of the right atrium of the heart marking the transition between the sinus venarum cavarum (which has a distinct embryological origin) and the rest of the right atrium (which features pectinate muscles on its inner surface). The terminal sulcus corresponds to the position of the terminal crest on the inner surface of the right atium. The terminal sulcus (and crest) indicate the postition of the sinoatrial node.[1]

Anatomy

The terminal sulcus extends from the front of the superior vena cava to the front of the inferior vena cava, and represents the line of union of the sinus venosus of the embryo with the primitive atrium.

The superior border of the terminal sulcus designates the transverse plane in which the SA node resides. The inferior border designates the transverse plane in which the AV node resides.

References

Waschke, Jens; Böckers, Tobias M.; Paulsen, Friedrich; Arnold, Wolfgang; Bechmann, Ingo, eds. (2018). Sobotta Anatomy Textbook: English Edition with Latin Nomenclature (1st ed.). München: Elsevier. p. 264. ISBN 978-0-7020-6760-0.

This article incorporates text in the public domain from page 529 of the 20th edition of Gray's Anatomy (1918)

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[1] Waschke, Jens; Böckers, Tobias M.; Paulsen, Friedrich; Arnold, Wolfgang; Bechmann, Ingo, eds. (2018). Sobotta Anatomy Textbook: English Edition with Latin Nomenclature (1st ed.). München: Elsevier. p. 264. ISBN 978-0-7020-6760-0.