What division maintains homeostatic regulation by promoting a relaxed state? A. Autonomic B. Somatic C. Sympathetic D. Parasympathetic

The division that maintains homeostatic regulation by promoting a relaxed state is D. Parasympathetic.

Here's a step-by-step explanation:

1. The autonomic nervous system (Option A) is a control system that acts largely unconsciously and regulates bodily functions such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response and the rest-and-digest response.

2. The somatic nervous system (Option B) is the part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles.

3. The sympathetic nervous system (Option C) is one of the two main divisions of the autonomic nervous system, the other being the parasympathetic nervous system. The sympathetic nervous system's primary process is to stimulate the body's fight-or-flight response.

4. The parasympathetic nervous system (Option D) is one of the two divisions of the autonomic nervous system, the other being the sympathetic nervous system. The parasympathetic system is responsible for stimulation of "rest-and-digest" or "feed and breed" activities that occur when the body is at rest, especially after eating, including sexual arousal, salivation, lacrimation (tears), urination, digestion and defecation.

So, the division that maintains homeostatic regulation by promoting a relaxed state is the Parasympathetic system (Option D).