An Increase in Heart Rate Primarily Begins with Stimulation of Which

question 15

Multiple Choice

An increase in heart rate primarily begins with stimulation of which part of the conduction system?

• A) Purkinje fibers
• B) Bundle of HIS
• C) AV node
• D) SA node

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Definitions:

Collapse

The sudden failure or loss of strength leading to a fall or the falling in of something, such as a structure.

Orthopnea

Difficulty in breathing that is relieved by sitting or standing in an upright position, commonly associated with heart and lung diseases.

Orth/o

A prefix meaning straight, correct, or right, used in medical and technical terms.

Pleurisy

An inflammation of the pleura, the membrane surrounding the lungs, which can cause sharp chest pain with breathing.