Coronary sinus

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Vein: Coronary sinus
Base and diaphragmatic surface of heart.
Interior of right side of heart.
Latin	sinus coronarius
Gray's	subject #138 530
Source	great cardiac vein
Drains to	right atrium
Precursor	sinus venosus
Dorlands / Elsevier	s_12/12738662

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The coronary sinus is a collection of veins joined together to form a large vessel that collects blood from the myocardium of the heart. It is present in humans and other animals.

Location

It is located between the left atrium and ventricle on the posterior surface of the heart.

It runs transversely in the groove between the left atrium and ventricle on the posterior surface of the heart.

The coronary sinus orifice (opening) is just superior to the septal leaflet of the tricuspid valve. The coronary sinus orifice is also known as the ostium of the coronary sinus.

Drainage

It receives blood mainly from the small, middle, great and oblique cardiac veins. It also receives blood from the left marginal vein and the left posterior ventricular vein. The anterior cardiac veins drain directly into the right atrium. (Some small veins drain into any of the four chambers of the heart.)

It drains into the right atrium on the posterior, inferior surface, medial to the inferior vena cava opening.

Additional images

Diagram showing completion of development of the parietal veins.

See also

• Coronary arteries

External links

• -200933319 at GPnotebook
• SUNY Figs 20:04-03 - "Posterior view of the heart."
• MedEd at Loyola Radio/curriculum/Vascular/Coronary_sinus.jpg
• Coronary+sinus at eMedicine Dictionary

v • d • e Veins of the torso
Coronary	coronary sinus (great cardiac, left marginal, small cardiac, middle cardiac, posterior of the left ventricle, oblique of the left atrium) • anterior cardiac (right marginal) • pulmonary
Thorax/ SVC	brachiocephalic: inferior thyroid - thymic - internal thoracic (anterior intercostal, superior epigastric) - left superior intercostal - supreme - vertebral - internal jugular - subclavian (axillary: lateral thoracic, thoracoepigastric) - pericardiacophrenic azygos: right superior intercostal - bronchial - intercostal/posterior intercostal 5-11 - accessory hemiazygos/hemiazygos - superior phrenic
Vertebral column	vertebral venous plexuses (external, internal) • spinal (posterior, anterior) • basivertebral • intervertebral
Abdomen/ IVC	to IVC on right and left: renal - hepatic - lumbar to IVC on right, renal vein on left: inferior phrenic - suprarenal - ovarian/testicular (pampiniform plexus) to azygos system: ascending lumbar (subcostal)
Pelvis/common iliac	external iliac: inferior epigastric - deep circumflex iliac vein internal iliac: inferior gluteal - superior gluteal - median sacral vein - lateral sacral - obturator - internal pudendal (inferior rectal) - vesical venous plexus - prostatic venous plexus - deep of penis - vaginal venous plexus - uterine venous plexus - middle rectal - hemorrhoidal
Portal system/ portal vein	splenic: short gastric - left gastroepiploic - pancreatic - inferior mesenteric (superior rectal, left colic) superior mesenteric: right gastroepiploic - pancreaticoduodenal - middle colic - right colic - ileocolic (appendicular) direct (cystic, left gastric, right gastric, paraumbilical)
fetal	ductus venosus • umbilical

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Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

nn:Koronarsinus