Question

The parasympathetic branch of the ANS. Select all that apply. Multiple answers are accepted for this question. Select one or more answers and submit.

A. Originates in the thoracic region of the spinal cord.
B. Innervates organs and tissues only in the bottom half of the body.
C. Arises from the brainstem and lower regions of the spinal cord.
D. Has long pre-ganglionic fibers.

Answer 1

The parasympathetic branch of the ANS originates in the brain stem and sacral spinal cord, and is also known as the craniosacral system. Its preganglionic fibers are longer than the postganglionic fibers.

Step-by-step explanation:

The parasympathetic branch of the autonomic nervous system (ANS) originates in nuclei of the brain stem and the lateral horn of the sacral spinal cord. It is also known as the craniosacral system. The preganglionic fibers of the parasympathetic system are longer in comparison to the postganglionic fibers.