Multiple choice

When a Lubb sound is heard by a doctor, it means the _____________.

  1. upper chamber of the heart contracts to squeeze the blood into pulmonary artery

  2. lower chamber of the heart contracts and the blood rushes upward into the aorta

  3. lower chamber of the heart contracts and the blood rushes into the upper chamber

  4. upper chamber of the heart contracts and the blood rushes upward into the aorta

  5. upper chamber of the heart contracts to squeeze the blood downward into the ventricles
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Yes, it is correct. Lubb happens when  upper chamber of the heart contracts and blood flows downward.

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