The Flattening of the Action Potentials of Myocardial Contractile Cells

question 30

Multiple Choice

The flattening of the action potentials of myocardial contractile cells, called the plateau phase, is due to a combination of ________ K⁺ permeability and ________ Ca²⁺ permeability.

• A) increasing, increasing
• B) decreasing, decreasing
• C) increasing, decreasing
• D) decreasing, increasing

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Definitions:

1929

The year marked by the Wall Street Crash, leading to the onset of the Great Depression impacting the global economy.

1933

The year notable for the depth of the worldwide Great Depression and the implementation of the New Deal in the United States.

Transfer Payment

A payment made by governments to individuals without any services or goods being received in return, often part of social welfare programs.

Old-Age Pensions

Retirement benefits provided by the government, employers, or other institutions to support individuals financially after they retire.