The _____ Has the Fastest Rate of Depolarization and Therefore

question 48

Multiple Choice

The _____ has the fastest rate of depolarization and therefore directs all the other cells of the heart.

• A)sinoatrial (SA)node
• B)atrioventricular (AV)node
• C)bundle of His
• D)Purkinje fibers

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Definitions:

Variable Costs

Expenses that change in proportion to the activity or volume of a business operation.

Fixed Costs

Expenses unaffected by the quantity of production or sales, encompassing items like monthly rent, staff remuneration, and various insurances.

Cost Behaviors

The way in which costs change in relation to changes in a firm's level of production or activity, including fixed, variable, and mixed costs.

Variable Cost

Costs that change in proportion to the level of production or activity.