In the Parasympathetic System,the Terminal Buttons of Preganglionic Fibers Secrete

question 39

Multiple Choice

In the parasympathetic system,the terminal buttons of preganglionic fibers secrete ________,whereas the postganglionic fibers secrete ________.

• A) norepinephrine; acetylcholine
• B) glutamate; acetylcholine
• C) serotonin; norepinephrine
• D) acetylcholine; acetylcholine
• E) acetylcholine; norepinephrine

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Definitions:

Paleontologist

A scientist who studies fossils to understand the history of life on Earth, including the evolution of plants and animals.

Early Plants

Refers to the first primitive forms of plant life that began to emerge on Earth over 500 million years ago, playing a crucial role in the development of terrestrial ecosystems.

Gemma

A small asexual reproductive structure found in some plants, such as liverworts, that can develop into a new organism.

Liverworts

A group of non-vascular plants belonging to the plant division Marchantiophyta, often found in moist, shaded environments.