In Autonomic Efferent Pathways, Preganglionic Neurons Use _______ as the Neurotransmitter

question 9

Multiple Choice

In autonomic efferent pathways, preganglionic neurons use _______ as the neurotransmitter, whereas postganglionic neurons use _______ as the neurotransmitter.

• A) norepinephrine; acetylcholine
• B) acetylcholine; norepinephrine
• C) norepinephrine or acetylcholine; norepinephrine
• D) acetylcholine; norepinephrine or acetylcholine
• E) norepinephrine or acetylcholine; norepinephrine or acetylcholine

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Definitions:

Prokaryotes

Microorganisms characterized by the absence of a distinct nucleus and other organelles, including bacteria and archaea.

Gene Pool

The complete set of unique alleles in a species or population.

Genetic Drift

Mechanism of evolution due to random changes in the allelic frequencies of a population; more likely to occur in small populations or when only a few individuals of a large population reproduce.

Adaptive Radiation

Rapid evolution of several species from a common ancestor into new ecological or geographic zones.