The part of the involuntarynervous system that serves to slow the heart rate, increase intestinal and glandular activity, and relax the sphincter muscles. The parasympathetic nervous system, together with the sympathetic nervous system, constitutes the autonomic nervous system.
Like other parts of the nervoussystem, the sympathetic nervoussystem operates through a series of interconnected neurons: a. isomerization of retinal.b. bipolar neurons in the retina.c. production of new proteins in the lens. d. constriction of the pupil. e. dilation of the pupil.
The Parasympathetic system is…O The branch of the Autonomic Nervous System (ANS) O Responsible for the body’s ability to recuperate and return to a balanced state (known as "homeostasis") after experiencing pain or stress.O The Sympathetic System is also known as the "fight or flight" response O Also called ‘’relax and renew’’O Conserves energy as it slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles in the gastrointestinal tract.
When the sympathetic systemactivates in response to some sort of stressor, the parasympathetic reacts inturn to bring the body back to a state of equilibrium. The Parasympathetic system is consistently active at a low level.
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