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The autonomic nervous system controls all of the following except the skeletal muscle in the rectus abdominis

skeletal muscle in the rectus abdominis

Which one of the following best describes the order of a visceral reflex?

Sensory receptor → afferent nerve fiber → interneuron → efferent nerve fiber → gland

In response to high blood pressure, stretch receptors called baroreceptors will trigger a reflex that causes the heart to decrease its beats per minute

baroreceptors; decrease

The motor pathway of the autonomic nervous system usually involves two neurons

two

Preganglionic axons run from the gray matter to the autonomic ganglia

gray matter; autonomic ganglia

Preganglionic axons of the autonomic efferent pathway are myelinated and secrete acetylcholine (ACh)

myelinated; acetylcholine (ACh)

Which of the following is NOT a reason that somatic reflexes act faster than visceral reflexes?

The effector organs in the somatic reflex are closer to the spinal cord

Which of the following statements is true regarding parasympathetic tone?

It holds the resting heart rate below its intrinsic rate

The background rate of sympathetic and parasympathetic activity is called autonomic tone

autonomic tone

Which of the following is true regarding the autonomic nervous system?

Its denervation would cause hypersensitivity

Most axons of the parasympathetic nervous system travel in the vagus nerve

vagus

Sympathetic axons arise only from the thoracic and lumbar regions

thoracic and lumbar

The sympathetic chain of ganglia is found at cervical, thoracic, lumbar, sacral, and coccygeal levels

cervical, thoracic, lumbar, sacral, and coccygeal

Which of the following is NOT a characteristic of the parasympathetic division?

It has short preganglionic axons

Which structure releases neurotransmitter molecules in a paravertebral ganglion?

Sympathetic preganglionic axon

The solar plexus is used as a name for the celiac and mesenteric ganglia

celiac and mesenteric ganglia

The neurotransmitter(s) associated with autonomic ganglia is acetylcholine (ACh)

acetylcholine (ACh)

Which is more effective in producing bronchodilation?

Norepinephrine

Muscarinic receptors bind acetylcholine

acetylcholine

Sympathetic effects tend to last longer than parasympathetic effects because norepinephrine can diffuse into the bloodstream without being broken down

longer; norepinephrine can diffuse into the bloodstream without being broken down

MAO inhibitors would most likely decrease the amount of NE destroyed and may be used as antidepressants

decrease the amount of NE destroyed and may be used as antidepressants

Caffeine blocks the receptor for adenosine

adenosine

Which contains primarily adrenergic fibers?

Postganglionic neurons of the sympathetic division