If the Rate Is 20-40 Beats Per Minute and the QRS

question 24

Multiple Choice

If the rate is 20-40 beats per minute and the QRS measures over 0.12 sec,you should suspect that the pacemaker controlling the heart is located in the:

• A)SA Node.
• B)atria.
• C)AV junction.
• D)ventricles.

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Definitions:

Chemical Reaction

A process that leads to the transformation of one set of chemical substances to another through the breaking and forming of chemical bonds.

Activation Energy

The minimum amount of energy that is required to initiate a chemical reaction, determining the reaction rate.

Enzymes

Biological molecules that act as catalysts, speeding up chemical reactions in living organisms without being consumed in the process.

Enzyme

Biomolecules that act as catalysts, speeding up specific biochemical reactions in the body without being consumed in the process.