Which of the following is mismatched?

/in /by

Which of the following is mismatched?
a. opening of sodium fast channels – depolarizationb. closing of calcium slow channels – plateau phasec. opening of potassium channels – rapid repolarization
d. closure of sodium channels – early repolarization
e. opening of calcium slow channels – plateau phase

8. Turbulence of blood flow through the aortic valve would give rise to
a. the first heart soundb. the second heart soundc. a heart murmur
d. an extra heart beat
e. end-systolic volume