Multiple choice

In mammalian heart, which of the following structures belongs to the right atrium?

  1. Aaortic orifice

  2. Trabeculae carneae

  3. Orifice of the coronary sinus.

  4. Tendinous cords
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The coronary sinus orifice of the right atrium is the aperture via. which approximately 90% venous drainage of the heart is returned to the circulation by the coronary sinus.

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