Exam 19: The Autonomic Nervous System

Select the best description of the sympathetic postganglionic neurons:

The _____ is the major control and integration center of the autonomic nervous system.

The lateral gray horns of the thoracic region contain cell bodies of _____ (sympathetic or parasympathetic) preganglionic neurons.

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

Parasympathetic preganglionic neuron cell bodies are located in the brain stem and in the lateral gray horns of the second through fourth sacral segments of the spinal cord.

This leader line points to the right sympathetic trunk ganglion which receives preganglionic axons from thoracic and lumbar spinal cord segments.

Select the best description of the pterygopalatine ganglia:

This leader line points to right vagus (X) nerve which supplies parasympathetic fibers to most of the trunk viscera.

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.

Select the best description of a white ramus:

Select the best description of the nuclei in the brain stem:

List the four cranial nerves that carry parasympathetic motor impulses. Three pairs of these nerves lead to four pairs of ganglia. Name the ganglia and state which cranial nerves connect to them.

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

All adrenergic alpha receptors are ALWAYS excitatory.

Arrange the following components of an autonomic reflex arc in the proper order: 1) preganglionic motor neuron 2) receptor 3) integrating center (interneurons) 4) postganglionic motor neuron 5) visceral effector 6) autonomic ganglion 7) sensory neuron