Which of these criteria must be met for the heart to function efficiently
A)Excitation and consequently contraction of the cardiac muscle fibres of each heart chamber should be coordinated to ensure efficient pumping.
B)The ventricles should be excited and contract before the onset of atrial contraction to ensure that ventricular filling is complete.
C)The right side of the heart should contract first to ensure that oxygenated blood is delivered to the heart before the left side contracts.
D)The fluid pressure in the pericardial cavity must be high for the heart to function efficiently.

Question

Quizplus · Accepted Answer

A) The coordination of excitation and contraction of cardiac muscle fibers across the heart chambers is crucial for efficient pumping, ensuring that blood is moved effectively through the heart and into the circulation.

Which of These Criteria Must Be Met for the Heart