Autonomic Nervous System

Which is (are) the neurotransmitter(s) in a somatic motor pathway? A. Acetylcholine B. Amines C. Amino Acids D. Neuropeptides

A. Acetylcholine

Which of the following would not affect the autonomic nervous system? A. Skeletal muscle B. Blood vessels C. Sweat glands D. The iris of the eye

A. Skeletal Muscle

Which of the following does not describe the sympathetic nervous system? A. Autonomic B. Localized effect C. Adrenergic D. Norepinephrine

B. Localized effect

Somatic motor and autonomic pathways share all of the following characteristics except: A. Direction of information flow B. Location of peripheral fibers C. Number of neurons between central nervous system (CNS) and effector D. Acetylcholine

C. Number of neurons between central nervous system (CNS) and effector

All of the following belong to the autonomic nervous system except: A. Parasympathetic B. Norepinephrine C. Somatic D. Adrenergic

C. Somatic

All of the following are examples of parasympathetic stimulation except: A. Contraction of the urinary bladder B. Relaxation of the sphincters of the digestive tract C. Increased salivation D. Increased heart rate

D. Increased heart rate

Sympathetic responses generally have widespread effects on the body because

Preganglionic fibers synapse with several postganglionic fibers

Once inside the sympathetic chain ganglion, the preganglionic fiber may:

Synapse with a sympathetic postganglionic neuron Send ascending and/or descending branches through the sympathetic trunk to synapse with postganglionic neurons in other chain ganglia Pass through one or more ganglia without synapsing

Norepinephrine is liberated at:

most sympathetic postganglionic nerve endings

The autonomic nervous system functions chiefly in the:

reception of sensory impulses