Preganglionic Fibers of the Autonomic Efferent Pathway Are _________ and Secrete

question 25

Multiple Choice

Preganglionic fibers of the autonomic efferent pathway are _________ and secrete __________.

• A) myelinated;norepinephrine (NE)
• B) myelinated;acetylcholine (ACh)
• C) myelinated;acetylcholine (ACh)and norepinephrine(NE)
• D) unmyelinated;acetylcholine (ACh)
• E) unmyelinated;norepinephrine(NE)

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Definitions:

Hydrocephalus

A condition characterized by an abnormal accumulation of cerebrospinal fluid within the cavities of the brain, potentially causing increased pressure and swelling.

Craniostenosis

A condition characterized by the premature fusion of one or more sutures of an infant's skull, affecting skull and brain growth.

Myelomeningocele

A type of spina bifida where there is a hernia of the spinal cord and its meninges through a defect in the vertebral column.

Spinal Column

The series of vertebrae extending from the skull to the lower back, encasing the spinal cord and providing structural support to the body.