Autonomic Nervous System Sympathetic vs. Parasympathetic
The PAS nervous system conserves the body’s resources.
Parasympathetic fibers to the viscera have some sensory ability in addition to motor function.
Sensations of irritation, stretching of an organ, or decrease in tissue oxygen are transmitted to the thalamus through pathways not yet fully understood.
Table 43-7 page 1003-1004 compares the action of
sympathetic and parasympathetic systems in the body.