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An action potential spreads through the atria by gap junctions, but there are no gap junctions present in the ventricles, so the impulse must be propagated throughout the ventricular myocardium by the bundle of His and Purkinje system.
True Beta
A measure of a stock's volatility in relation to the market, adjusted for its unique characteristics and the market environment.
Mutual-fund Theorem
A principle in finance that suggests diversifying investments across a broad range of assets to reduce risk without sacrificing return, associated with the modern portfolio theory.
Passive Investment Strategy
Investing in a diversified portfolio or market index without attempting to search out mispriced securities.
Active Strategies
Investment tactics that involve ongoing buying and selling actions by the manager or investor in an attempt to outperform the market or a specific benchmark.
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