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:

Geometric Isomers

Molecules with the same structural formula but differing in the spatial arrangements of atoms or groups of atoms, due to restricted rotation around a bond.

Alkenes

Hydrocarbons containing at least one carbon-carbon double bond, part of the unsaturated hydrocarbons.

Cis-trans Isomers

Compounds that have the same molecular formula but differ in the spatial arrangement of certain atoms or groups around a double bond.

Isomeric

Refers to molecules that have the same molecular formula but a different arrangement of atoms in space.