During Repolarization (Phase 3) of a Contractile Cell Action Potential

question 48

Multiple Choice

During repolarization (phase 3) of a contractile cell action potential,

• A) only sodium permeability is increased.
• B) only calcium permeability is increased.
• C) only potassium permeability is increased.
• D) sodium and calcium permeability are both increased.
• E) sodium and potassium permeability are both increased.

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