The AV node delay:
a. allows the atria and ventricles to depolarize and contract as a unit.
b. allows the two ventricles to depolarize and contract separately.
c. allows the atria and ventricles to depolarize and contract separately.
d. speeds up the impulse transmission from the atria to the ventricles.
Verified Solution
This video solution was recommended by our tutors as helpful for the problem above.You are an athletic trainer who is working with someone planning to run a marathon. Your trainee tells you to give him a workout that will make his heart 'beat faster than ever before.' What do you tell him about the effects of too rapid a heart rate?
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. The heart consists of two superior ventricles and two inferior atria.
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
e. The heart plays a role in the regulation of blood pressure and secretes the hormone atrial natriuretic peptide.
Explain what each of the following terms represents on an electrocardiogram (ECG).
a. P wave
b. QRS complex
c. T wave
d. P-R interval
e. S-T segment
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
a. Systole is the contraction portion of the cardiac cycle and diastole is the relaxation portion.
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. Atrial systole is responsible for ejecting most of the blood into the ventricles during the ventricular filling phase of the cardiac cycle.
