The valve of the coronary sinus (Thebesian valve) is a semicircular fold of the lining membrane of the atrium, at the orifice of the coronary sinus.
http://en.wikipedia.org/wiki/Valve_of_the_coronary_sinus

The right atrium receives de-oxygenated blood from the superior vena cava, inferior vena cava and coronary sinus. The left atrium receives oxygenated blood from the left and right ...
http://en.wikipedia.org/wiki/Atrium_%28anatomy%29

coronary sinus n. A venous sinus that opens into the right atrium of the heart and serves to drain the coronary
http://www.answers.com/topic/coronary-sinus

Right Atrium Showing Interatrial Septum with Fossa Ovalis & Coronary Sinus Opening
http://science.nhmccd.edu/biol/cardio/rtatrium.htm

SVC = Superior vena cava IVC = Inferior vena cava SA = Sinoatrial junction CS/OV = Coronary sinus/ oblique vein of left ventricle LA, RA = Left, right atrium LV, RV = Left, right ...
http://www.meddean.luc.edu/lumen/MedEd/GrossAnatomy/thorax0/heartdev/venosus.html

coronary sinus. n. A venous sinus that opens into the right atrium of the heart and serves to drain the coronary veins. Thesaurus Legend: Synonyms Related Words Antonyms
http://www.thefreedictionary.com/coronary+sinus

Electrical Conduction Between the Right Atrium and the Left Atrium via the Musculature of the Coronary Sinus Matthias Antz, MD; Kenichiro Otomo, MD; Mauricio Arruda, MD; ...
http://circ.ahajournals.org/cgi/content/full/98/17/1790

Persistent LSVC occurs in 0.1-0.5% of the general population, with 8% draining into the left atrium. Unroofed coronary sinus ASD is seen in 75% of patients with an LSVC that drains ...
http://www.emedicine.com/ped/topic2815.htm

It passes to the right and inferiorly to terminate by draining into the right atrium at the coronary sinus orifice. The coronary sinus is drained into by a number of smaller veins ...
http://www.gpnotebook.co.uk/simplepage.cfm?ID=-200933319

Coronary sinus ASDs are believed to arise from developmental failure of formation of the wall between the coronary sinus and the left atrium. The coronary sinus is a systemic venous ...
http://www.emedicine.com/ped/topic2493.htm

Introduction. In the normal heart, the superior and inferior vena cavea, along with the coronary sinus, have a characteristic arrangement within the right atrium.
http://www.pediheart.org/practitioners/defects/venous.htm

The right atrium also holds the coronary sinus which is the opening of the vein that drains the myocardium itself. Attached to the right atrium is the right auricular appendix.
http://www.answers.com/topic/right-atrium-1

Chest. 2000;117:1740-1748.) © 2000 American College of Chest Physicians Congenital Malformations of the Right Atrium and the Coronary Sinus * An Analysis Based on 103 Cases ...
http://www.chestjournal.org/cgi/content/full/117/6/1740

... coronary sinus receives the great, middle, and small cardiac veins: posterior vein of the left ventricle; the oblique vein of the left atrium. The tributaries to the coronary sinus ...
http://www.anatomyatlases.org/AnatomicVariants/Cardiovascular/Text/Veins/CoronarySinus.shtml

A large communication between coronary sinus and left atrium is a rare cardiac anomaly. ... Abnormal communication between the left atrium and the coronary sinus. Presentation of 2 ...
http://www.medscape.com/medline/abstract/2409622?src=emed_ckb_ref_0

The persistent left superior vena cava might be connected to the coronary sinus or to the left atrium. In cases of connection to the coronary sinus, this sinus is enlarged and ...
http://www.thefetus.net/page.php?id=60

Most of the blood supplied by the coronary arteries is returned to the right atrium by way of the coronary sinus. Tributaries of the coronary sinus include the great cardiac vein ...
http://www.jdaross.cwc.net/heart6.htm

Understand normal right atrium, vena cava, coronary sinus and IAS anatomy ; Obtain TEE views of right atrium, vena cava, coronary sinus and IAS and hepatic vein anatomy ; Identify ...
http://www.e-echocardiography.com/cme/cme_description_view.php?CMEExamID=9

The valve of the coronary sinus (Thebesian valve) is a semicircular fold of the lining membrane of the atrium, at the orifice of the coronary sinus.
http://search.com.com/reference/Valve_of_the_coronary_sinus

... groove, which lies between the connections of the vena cavas to the right atrium and the right pulmonary veins to the left atrium. The orifice of the coronary sinus and it's ...
http://www.pediheart.org/practitioners/anatomy/venous.htm