If the Length of the Absolute Refractory Period in Cardiac

question 74

Multiple Choice

If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells,________.

• A) contractions would last as long as the refractory period
• B) tetanic contractions might occur, which would stop the heart's pumping action
• C) pacemaker cells would cease to spontaneously depolarize
• D) it would be much longer before cardiac cells could respond to a second stimulation

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Definitions:

Exports

Goods and services that are produced domestically and sold abroad

Aggregate Demand

The entire need for goods and services within an economy's market, assessed at a certain price level throughout a specific time span.

Wealth Effect

The change in spending that accompanies a change in perceived wealth, usually through market price changes of assets like homes or investments.

Aggregate Demand

The complete summon for goods and services in an economy, quantified at a particular level of overall price throughout a definite period.