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  • Advanced Medical Biology
  • The Na+ electrochemical gradient is reduced by:
Multiple choice

The Na+ electrochemical gradient is reduced by:

  1. beta 1-adrenergic agonists

  2. phosphodiesterase inhibitors

  3. digoxin

  4. NCX

  5. SERCA

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Partial inhibition of the Na+ pump with digoxin reduces the Na+ electrochemical gradient, thus impeding NCX, so more Ca2+ remains in the cell to support the next beat.

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