Exam 19: The Autonomic Nervous System

The _____ portion of the sympathetic trunk innervates (stimulates) the heart, sweat glands of the head, the smooth muscle of the eye, and blood vessels in the head.

The celiac ganglion and a mesenteric ganglion are examples of prevertebral ganglia.

Select the best description of the sympathetic postganglionic neurons:

Select the best description of the otic ganglia:

Sympathetic preganglionic axons (fibers) are, in general, longer than parasympathetic preganglionic axons (fibers).

Vasoconstriction of peripheral blood vessels is a(n) _____ response.

Splanchnic nerves carry sympathetic axons (fibers) from a/an _____ ganglion to a/an _____ ganglion.

A single sympathetic preganglionic axon has many axon collaterals (branches) that can synapse with 20 or more postganglionic neurons. This divergence helps explain how sympathetic responses can affect most body parts simultaneously.

Activation of nicotinic receptors by acetylcholine (ACh) triggers which response in a postsynaptic cell?

Select the best description of the axons that leave the brain as part of the vagus (X) nerves:

The lacrimal glands only receive parasympathetic innervation (stimulation).

An organ that is served by both divisions of the autonomic nervous system is said to have _____ innervation.

Parasympathetic postganglionic axons (fibers) are very short because the terminal ganglia are very close to the structures they innervate (stimulate).

Select the best description of the sympathetic preganglionic neurons:

The largest autonomic plexus is the _____ plexus in the abdomen.

The anterior and medial portions of the hypothalamus control the _____ division of the autonomic nervous system.

Select the best description of the sympathetic preganglionic neurons:

Select the best description of the celiac ganglion:

The motor neurons of a sympathetic autonomic motor pathway have the following route: 1)gray ramus 2)anterior root of spinal nerve 3)axon collaterals 4)white ramus 5)nerve to a visceral effector 6)sympathetic trunk ganglion

The superior, middle and inferior cervical ganglia are examples of prevertebral ganglia that innervate the heart and structures of the head.