P Waves Usually Appear Before

question 9

Multiple Choice

P waves usually appear before:

• A)T waves.
• B)upright waves.
• C)PR intervals.
• D)QRS complexes.

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Definitions:

Action Potential

A temporary reversal of the electrical polarization of the membrane of a nerve cell or muscle cell, allowing for the transmission of signals.

Muscular Paralysis

The loss of muscle function in part of your body, typically resulting from damage to the nervous system.

Acetylcholine

A neurotransmitter in the nervous system that plays an important role in muscle activation and memory functions.

Neurotransmitter

A neurotransmitter is a chemical substance that transmits nerve impulses across a synapse from one neuron to another.