MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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left coronary artery
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right coronary arter
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cardiac veins
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None of the above
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Detailed explanation-1: -The coronary venous network drains deoxygenated blood from the myocardium into one of two systems: the greater cardiac venous system and the smaller cardiac venous system. These systems are comprised of many complementary veins, the majority of which coalesce to form the coronary sinus.
Detailed explanation-2: -This means that the coronary sinus drains most of the cardiac veins, except the smallest cardiac (Thebesian) veins, which drain directly into all four chambers of the heart, and the anterior cardiac veins which drain directly into the right atrium.
Detailed explanation-3: -Coronary sinus drains the blood from most of the heart muscle and empties in the right atrium posteriorly, close to the opening of the tricuspid valve.