The Neurotransm Itter Used by Preganglionic Fibers Is

question 18

Multiple Choice

The neurotransm itter used by preganglionic fibers is

• A) Aceytylcholine for sympathetic fibers, norepinephrine for parasympathetic fibers
• B) Norepinephrine for sympathetic fibers, acetylcholine for parasympathetic fibers
• C) Acetylcholine for both sympathetic and parasympathetic fibers
• D) Norepinephrine for both sympathetic and parasympathetic fibers
• E) Dopamine for sympathetic fibers and acetylcholine for parasympathetic fibers

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Definitions:

Systole

The phase of the heartbeat where the heart muscle contracts and pumps blood from the chambers into the arteries.

Aortic Area

An anatomical region of the chest where the aorta is closest to the chest wall, often used in cardiovascular assessments.

Apical Pulse

The measurement of the heart rate at the apex of the heart, typically done through auscultation with a stethoscope placed on the chest.

Mitral Areas

Refers to the region of the chest over the heart where the mitral valve can best be heard; often crucial in diagnosing heart conditions.