The Frequency of Action Potentials Generated by the SA Node

question 79

Multiple Choice

The frequency of action potentials generated by the SA node is:

• A) increased by parasympathetic stimulation.
• B) decreased by sympathetic stimulation.
• C) increased by acetylcholine.
• D) increased by epinephrine.
• E) increased by an increase in blood pressure.

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Definitions:

Psychotherapy

A therapeutic treatment involving psychological methods, particularly when based on regular personal interaction with adults, to help a person change behavior and overcome problems in desired ways.

Suicide

Purposefully causing one's own demise.

Lithium

A chemical element and mood-stabilizing drug used to treat mood disorders, such as bipolar disorder.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell.