PRACTICE QUESTIONS

1. Choose the incorrect statement below:

a. A ganglion is a collection of nerve cell bodies outside the CNS.

b. Acetylcholine is the chemical transmitter at the parasympathetic postganglionic-to-target organ synapse.

c. Sympathetic postganglionic neurons are usually 5. longer than those of the parasympathetic system.

d. The adrenal medulla secretes mostly norepinephrine and relatively little epinephrine.

e. Muscarinic acetylcholine receptors are found on peripheral targets of parasympathetic postganglionic neurons.

The chemical neurotransmitter between preganglionic and postganglionic neurons of the parasympathetic component of the autonomic nervous system is:

a. Norepinephrine

b. Acetylcholine

c. Epinephrine

d. Serotonin

e. Y-Aminobutyric acid

The neurotransmitter most often found at the synapse between sympathetic postganglionic neurons and their targets is:

a. Norepinephrine

b. Epinephrine

c. Acetvlcholine

d. Dopamine

e. Y-Aminobutyric acid

Which of the following is true regarding sympathetic preganglionic neurons?

a. Their cell bodies are located in thoracic and lumbar regions of the spinal cord.

b. Their axons synapse within the sympathetic ganglion chain.

c. Their axons form splanchnic nerves.

d. Their axons travel in the ventral root.

e. All the above are true.

Horner's syndrome is caused by the loss of:

a. Sympathetic innervation to the eye

b. Parasympathetic postganglionic innervation to the eye

c. Peripheral muscarinic receptors

d. Vagus nerve fibers

e. Smooth muscle of the iris