Biology · Body Fluids and Circulation
A specialised nodal tissue embedded in the lower corner of the right atrium, close to the atrio-ventricular septum, delays the spreading of impulses to the heart apex for about 0.1 second. This delay allows:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1the ventricles to empty completely.
- 2blood to enter the aorta.
- 3the atria to empty completely.✓
- 4blood to enter pulmonary arteries.
Correct answer
the atria to empty completely.
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