Autonomic Nervous System Quiz

A visceral motor neuron whose cell body is within the CNS and exits the CNS is called a(n) ______ neuron.

• somatomotor

• postganglionic

• preganglionic

• lower motor

The sympathetic division of the ANS is also known as which of the following?

• somatic division

• craniosacral division

• thoracolumbar

Which neurotransmitter is released at the sympathetic chain ganglia?

• acetylcholine

• norepinephrine

• endorphin

• dopamine

The statement "Its postganglionic axons always use acetylcholine as the neurotransmitter" is true only for the ______ nervous system.

• true only for parasympathetic NS

• true only for somatic nervous system

• true only for the sympathetic NS

• true for both the parasympathetic and sympathetic nervous systems

In general, parasympathetic preganglionic fibers are ______ and postganglionic fibers are ______.

• short; short

• long; long

• short; long

• long; short

The statement "Preganglionic axon terminals release acetylcholine" is

• true of only the sympathetic nervous system

• true of only the parasympathetic nervous system

• true only for the somatic nervous system

• true of both the parasympathetic and sympathetic nervous system

Each of the following effects is associated with the action of postganglionic sympathetic fibers except

• decreased heart rate

• increased blood flow to skeletal muscles

• dilation of the pupils

• inhibition of sweat secretion

Neurons that use norepinephrine as a transmitter are called

• adrenergic

• muscarinic

• cholinergic

• nicotinic

Muscarinic receptors

• always produce an excitatory response

• are blocked by norepinephrine

• are found mostly in autonomic ganglia

• are normally activated by acetylcholine

Dual innervation refers to an organ receiving

• two nerves from the spinal cord and both autonomic and somatomotor nerves

• both sympathetic and parasympathetic innervation

• both autonomic and somatomotor nerves

• nerves from both the brain and the spinal cord