Myocardial Cells Can Generate Action Potentials Spontaneously Because They Have

question 58

Multiple Choice

Myocardial cells can generate action potentials spontaneously because they have

• A) unstable ion channels.
• B) permanently open channels for Na⁺ and K⁺.
• C) a net influx of Na⁺.
• D) L-type Ca²⁺ channels.
• E) prolonged Ca²⁺ influx.

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Definitions:

Fixed Overhead Spending Variance

This metric measures the difference between the actual fixed overhead costs incurred and the budgeted (or standard) fixed overhead costs.

Variable Overhead Efficiency Variance

The difference between the actual variable overhead incurred and the expected variable overhead based on standard cost for the actual level of activity.

Performance Evaluation

The process of assessing the effectiveness and efficiency of individuals, teams, or systems within an organization.

Budgets

Financial plans that estimate income and expenditures for a specific period of time, often used by businesses and individuals for planning purposes.