Parasympathetic Stimulation of the Heart Generally Leads to a Decrease

question 14

Multiple Choice

Parasympathetic stimulation of the heart generally leads to a decrease in heart rate,because acetylcholine

• A) increases intracellular cAMP levels and opens calcium channels.
• B) opens potassium channels allowing potassium ion efflux.
• C) binds and blocks b receptors on the cell membrane.
• D) inhibits voltage-gated sodium channels in the membrane.

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Definitions:

ECG Changes

Alterations identified in an electrocardiogram, reflecting changes in heart function or structure.

ECG Technician

A healthcare professional specializing in performing electrocardiograms to monitor and record electrical activity of the heart.

12-Lead ECG

A common tool in cardiac assessment, this records the electrical activity of the heart from 12 different angles/placements on the body.

Nursing Assistive Personnel

Healthcare workers who provide patient care under the supervision of a registered nurse or licensed practical nurse, often assisting with activities of daily life and basic clinical tasks.