Cardiac Pacemaker Cells of the SA Node Depolarize and Theoretically

question 137

Multiple Choice

Cardiac pacemaker cells of the SA node depolarize and theoretically generate a resting heart rate of approximately ________.

• A) 60-70 beats per minute
• B) 55-65 beats per minute
• C) 80-100 beats per minute
• D) 45-55 beats per minute
• E) 110-120 beats per minute

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Definitions:

Radioactive Isotopes

Variants of chemical elements that exhibit radioactivity, used in various applications including medicine, research, and energy generation.

Alpha Particles

Heavily charged particles consisting of two protons and two neutrons, emitted during radioactive decay.

Nuclear Fusion

A nuclear reaction where two light atomic nuclei combine to form a heavier nucleus, releasing a significant amount of energy.