Biology · PYQ NEET UG 2019(2)
हिन्दीA specialised nodal tissue embedded in the lower corner of the right atrium, close to Atrio-ventricular septum, delays the spreading of impulses to heart apex for about \( 0.1 \) sec. This delay allows
Correct answer · Option 1
the atria to empty completely.
Explanation
The delay at the AV node allows the atria to empty their blood completely into the ventricles before the ventricles contract.