The brief delay of the electrical impulse at the AV node primarily allows time for what to occur?

The brief delay of the electrical impulse at

Multiple choice — select the best answer

AThe ventricles to repolarize before contracting
BVentricular filling as the atria contract
CThe SA node to reset its rate
DBlood to enter the coronary arteries

✓ Correct answer: B. Ventricular filling as the atria contract The AV node delays conduction so the atria finish contracting and fill the ventricles before ventricular contraction, optimizing stroke volume.

.q-expl{display:block!important}.q-opt[data-idx="1"]{border-color:#16a34a;background:#f0fdf4}.q-opt[data-idx="1"] .oltr{background:#16a34a;color:#fff}.q-opt{cursor:default!important;pointer-events:none}

Keep practising. Use the free EKG Technician PDF, watch the YouTube walkthrough, or unlock all 10 web questions with timed mock exams.

Free PDF Video walkthrough

Topic: Cardiac Anatomy & Electrophysiology

← Previous Next → 🎲 Random question ↩ Back to all questions

Keep practising

The brief delay of the electrical impulse at the AV node primarily allows time for what to occur?

Related questions — Cardiac Anatomy & Electrophysiology

Free practice here. Timed mocks when you are ready.