Select the Correct Statement About the Function of Myocardial Cells

question 31

Multiple Choice

Select the correct statement about the function of myocardial cells.

• A) The influx of potassium ions from extracellular sources is the initiating event in cardiac muscle contraction.
• B) Cardiac muscle cells are innervated by sympathetic, parasympathetic, and somatic nerve fibers so that the nervous system can increase heart rate.
• C) The refractory period in skeletal muscle is much longer than that in cardiac muscle.
• D) The entire heart contracts as a unit or it does not contract at all.

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Definitions:

Frictionally Unemployed

Individuals temporarily unemployed while transitioning between jobs, often viewed as a natural part of the labor market.

Rate of Inflation

The rate of inflation is the annual percentage increase in the overall price level of goods and services in an economy over a period of time.

Unemployment Rate

The percentage reflecting those who are in the labor force and are not employed, yet are seeking employment.

Cost-push Inflation

Inflation caused by an increase in prices of inputs like labour, raw material, etc. It’s when the supply side of the economy’s production function becomes more expensive.