Definition

1. Noun:
   • A short sinus receiving most of the veins of the heart; empties into the right atrium: The coronary sinus is a large venous channel located on the posterior surface of the heart. It collects deoxygenated blood from the majority of the heart's own veins (cardiac veins) and delivers it directly into the right atrium.

Usage Examples

• Noun:
  • The surgeon carefully avoided the sinus coronarius during the procedure.
  • A blockage in the sinus coronarius can impair cardiac venous drainage.

Advanced Usage

• "To cannulate the sinus coronarius": In cardiac surgery or certain diagnostic procedures, a catheter may be inserted into the coronary sinus.
  • The cardiologist cannulated the sinus coronarius to administer retrograde cardioplegia.

Variants and Related Words

• Coronary sinus: This is the more common English term and a direct synonym for "sinus coronarius," which is the Latin anatomical term.
• Cardiac sinus: A less common variant.

Synonyms

• Coronary sinus: The standard English equivalent.
• Great cardiac vein: While often used synonymously in a general sense, anatomically, the great cardiac vein is a major tributary that becomes the coronary sinus.

Noun

1. a short sinus receiving most of the veins of the heart; empties into the right atrium