Exam 22: Autonomic Nervous System

The parasympathetic division is the dominant controller of the body at rest.

Sympathetic responses are usually widespread, involving many organ systems at once.

Which is not true about sympathetic postganglionic neurons?

Autonomic pathways do not connect with skeletal muscles.

If a nerve impulse is being sent to a gland, it will pass through two neurons.

A new theory of autonomic neurotransmission says that most postganglionic fibers release two substances to transmit an impulse.

The autonomic nervous system regulates subconscious body functions.

Which of the following might occur from the stimulation of parasympathetic fibers?

All cell bodies of the autonomic nervous system are located within the CNS.

Parasympathetic stimulation has no effect on sweat glands.

About half of the parasympathetic fibers travel in the vagus nerve.

Preganglionic neurons conduct impulses from the brain or spinal cord to an autonomic ganglion.

"Fight-or-flight" physiological changes include all of the following except:

Alpha receptors are stimulated by acetylcholine, whereas beta receptors are stimulated by norepinephrine.

Sympathetic responses generally have widespread effects on the body because:

An effect of sympathetic stimulation on the eye is constriction of the pupil.

Axon terminals that secrete acetylcholine are called cholinergic terminals.

Alpha receptors bind with:

Autonomic effectors require two efferent neurons.

Monoamine oxidase is an enzyme that enhances the action of norepinephrine.