Multiple choice

Structure separating atria of the heart from the ventricles is

  1. Coronary sulcus

  2. Interatrial groove

  3. Anterior interventricular sulcus

  4. Posterior longitudinal sulcus

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Explanation

Atria of the heart are separated from the ventricles by the coronary sulcus, this contains the trunks of the nutrient vessels of the heart, and is deficient in front, where it is crossed by the root of the pulmonary artery.

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