Valve of the coronary sinus
Interior of right side of heart. (Valve of the coronary sinus labeled at bottom left.)
Details
Identifiers
Latinvalvula sinus coronarii
TA98A12.1.01.016
TA24030
FMA9242
Anatomical terminology

In the anatomy of the heart, the valve of the coronary sinus (also called the Thebesian valve, after Adam Christian Thebesius[1][2][3]) is a valve located at the orifice of the coronary sinus where the coronary sinus drains into the right atrium.[4] It prevents blood from flowing backwards into the coronary sinus during contraction of the heart.

Anatomy

The valve of the coronary sinus is a thin, semilunar (half-moon-shaped) valve located on the anteroinferior part of the opening into the right atrium.[5] It is formed by as semicircular fold of the lining membrane of the right atrium. It is situated at the base of the inferior vena cava.

Variation

The valve may be completely absent;[6] it is present in 73-86% of individuals.[7]

The valve may vary in size.[6] It may be double, or it may be cribriform (containing numerous small holes).

Function

The valve prevents regurgitation of blood into the sinus during diastole (i.e. the contraction of the atrium).[4]

References

Public domain This article incorporates text in the public domain from page 531 of the 20th edition of Gray's Anatomy (1918)

  1. ↑ synd/4012 at Who Named It?
  2. ↑ A. C. Thebesius. Disputatio medica inauguralis de circulo sanguinis in corde. Doctoral dissertation, Leiden, 1708.
  3. ↑ Loukas M, Clarke P, Tubbs RS, Kolbinger W (2007). "Adam Christian Thebesius, a historical perspective". International Journal of Cardiology. 129 (1): 138–40. doi:10.1016/j.ijcard.2007.06.048. PMID 17692957.
  4. 1 2 Wilson, Alexander; Bhutta, Beenish S. (2022), "Anatomy, Thorax, Coronary Sinus", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 32491498, retrieved 2023-01-05
  5. ↑ Shah, Sanket S.; Teague, Shawn D.; Lu, Jimmy C.; Dorfman, Adam L.; Kazerooni, Ella A.; Agarwal, Prachi P. (July 2012). "Imaging of the Coronary Sinus: Normal Anatomy and Congenital Abnormalities". RadioGraphics. 32 (4): 991–1008. doi:10.1148/rg.324105220. ISSN 0271-5333. PMID 22786990.
  6. 1 2 P. Felle, J. G. Bannigan. Anatomy of the valve of the coronary sinus (thebesian valve). Clinical Anatomy. Vol. 7 (1), 10-12. Abstract
  7. ↑ Shah, Sanket S.; Teague, Shawn D.; Lu, Jimmy C.; Dorfman, Adam L.; Kazerooni, Ella A.; Agarwal, Prachi P. (July 2012). "Imaging of the Coronary Sinus: Normal Anatomy and Congenital Abnormalities". RadioGraphics. 32 (4): 991–1008. doi:10.1148/rg.324105220. ISSN 0271-5333. PMID 22786990.
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