Exam 15: The Autonomic Nervous System and Visceral Sensory Neurons

Congenital megacolon, or Hirschsprungʹs disease, is a birth defect in which the innervation of the distal region of the large intestine fails to develop normally.

Preganglionic fibers are myelinated, whereas postganglionic fibers are unmyelinated.

A descriptive term that identifies the type of neurotransmitter released by sympathetic postganglionic fibers.

Sympathetic fibers leave the spinal cord in the

Adrenergic postganglionic neurons release the hormones norepinephrine and epinephrine.

This division can also be called the craniosacral division.

Visceral pain results from all the following except

The part of the brain that exerts more control over autonomic functioning than any other part is the

Parasympathetic postganglionic fibers of the head travel within the

The secretions of the adrenal medulla act to supplement the effects of

The adrenal medulla is stimulated by preganglionic neurons localized to gray matter of the spinal cord

Describe the correct pathway that a nerve impulse to blood vessels and hair follicles (glands and arrector pili muscles) in the dermis must travel using the following structures: ventral ramus, dorsal root, ventral root, sympathetic trunk, gray ramus communicans, white ramus communicans, and spinal nerve.

Postganglionic sympathetic fibers release norepinephrine and are called cholinergic fibers.