Exam 16: Autonomic Nervous System

Sympathetic responses generally have widespread effects on the body because:

The preganglionic neurons of both the sympathetic and the parasympathetic divisions are cholinergic.

Both the parasympathetic and the sympathetic divisions continually conduct impulses to visceral effectors.

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

Sensory neurons can operate in autonomic reflex arcs.

Biofeedback involves willful control of specific effectors normally controlled only autonomically.

The autonomic nervous system regulates subconscious body functions.

Once inside the sympathetic chain ganglion,the preganglionic fiber will always synapse with a sympathetic postganglionic neuron.

Match each term with its description or definition. -structure that lies on either side of the spinal cord and through which preganglionic sympathetic neurons enter

Match each term with its description or definition. -one type of receptor stimulated by acetylcholine

The "fight-or-flight" reaction is a normal response in times of stress.

The splanchnic nerve is made up of preganglionic sympathetic fibers.

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

Explain physiologically how a beta blocker affects heart muscle activity.

Nicotinic receptors are located on the dendrites of all preganglionic neurons of both the parasympathetic and sympathetic divisions.

The autonomic nervous system functions chiefly in the:

Propranolol is an example of a:

Blood vessels in both digestive organs and skeletal muscles are dilated by sympathetic stimulation.

Acetylcholine affects visceral effectors by first binding to alpha receptors.

The gray rami of the spinal nerve are sympathetic fibers and the white rami are parasympathetic fibers.