1. Which of the following statements is false? a. The action potential of a cardiac contractile...

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Medical Sciences

1. Which of the following statements is false?
a. The action potential of a cardiac contractile cell has aplateau.
b. The action potential of a cardiac contractile cell has threephases.
c. The action potential of a cardiac contractile cell has agradual depolarization.
d. The action potential of a cardiac contractile cell returns torest.
2. The electrical axis of the heart corresponds to:
a. The conduction of the heart
b. The cardiac contractile cell action potential
c. The cardiac nodal cell action potential
d. The orientation of the heart

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4.3 Ratings (937 Votes)

Ans1 bThe action potential of a cardiac contractile cell has three phases There are five cardiac action potential phases numbered 0 through 4 Phase 0 is depolarization of the membrane and the opening of fast ie highflow sodium channels Potassium flow also decreases Phase 1 is partial repolarization of the membrane thanks to a See Answer

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