Question

Which statements are correct concerning the parasympathetic division of the ANS? a: Preganglionic neuron cell bodies are located in brainstem nuclei b: Preganglionic neuron cell bodies are located in the lateral horns of the T1-L2 regions c: It participates in the "fight-or-flight" response d: It maintains homeostasis e: Preganglionic neuron cell bodies are located in the sacral region of the spinal cord

Answer 1

a) option is correct

Explanation:

The parasympathetic nervous system is a division of the autonomic nervous system that controls the internal body organs in resting state

• It is active all the time and promotes life by regulating the vital body functions, although the person is unconscious about all these processes
• The parasympathetic system also has two types of nerve fibers:
• Pre-ganglionic nerve fibers: These nerve fibers originate from the central nervous system and terminate at the ganglia of the parasympathetic nervous system
• Post-ganglionic nerve fibers: They originate from the ganglia of the parasympathetic nervous system and terminate at the target organs, the post-ganglionic fibers are short in case of the parasympathetic system because the ganglia are present near the target organs
• There are different processes in the body that are under the control of parasympathetic nervous system, namely, blood pressure, heart rate, respiration, digestion and urination