Which of These Criteria Must Be Met for the Heart

question 119

Multiple Choice

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.