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Pharmacology Cardiovascular system 32c331cf

The biochemical mechanism of action of digitalis is associated with:

A
An increase in conduction from atrium to ventricle
B
An increase in ATP synthesis
C
An increase in systolic intracellular calcium levels
D
A block of calcium channels
High-Yield Explanation
Digoxin is a cardiac glycoside. It directly inhibits Na-K ATPase and increases intracellular Na and decrease the extrusion of calcium. Thus increases intracellular Calcium. By increasing the calcium content and sodium content, force of contraction increases. (Ref-Essential of medical pharmacology K D TRIPATHI 6 Edition)

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