MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Concerning the blood supply of the heart
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the coronary arteries are the first branches of aorta
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the anterior cardiac vein drains into the coronary sinus
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the great cardiac vein runs in the interventricular sulcus with the anterior interventricular artery
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if the posterior interventricular artery arises from the circumflex artery, the heart is said to have right dominance
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the cardiac veins drain into the right atrium (excluding the venae cordis minimae)
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Explanation:
Detailed explanation-1: -They drain the myocardium and pass through the endocardial layer to empty mostly into the right atrium, but a few empty into the ventricles.
Detailed explanation-2: -The great cardiac vein, the middle cardiac vein, and the small cardiac vein all drain into the coronary sinus (which opens into the right atrium). The anterior cardiac veins drain directly into the right atrium.
Detailed explanation-3: -Clinical Significance Known shunts in the adult cardiovascular circulation include the bronchial veins, which supply the conducting airways of the lungs, and the Thebesian vessels of the left side of the heart draining deoxygenated blood into the newly oxygenated blood of the left atrium and ventricle.
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