Preganglionic Fibers Are Myelinated, Whereas Postganglionic Fibers Are Unmyelinated

question 88

True/False

Preganglionic fibers are myelinated, whereas postganglionic fibers are unmyelinated.

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Definitions:

Pancreas

A gland in the digestive and endocrine system that produces insulin and digestive enzymes.

Pituitary Gland

Endocrine gland attached to the hypothalamus by the infundibulum; also called hypophysis.

Sphenoid Bone

A butterfly-shaped bone at the base of the skull that participates in forming the floor of the cranium, holding the brain.

Hypothalamus

A region of the brain below the thalamus, coordinating both the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems.