Parasympatholytics

Parasympatholytics (pronunciation: para-sym-path-o-lytics), also known as anticholinergics, are a class of medications that inhibit the actions of the parasympathetic nervous system (PNS).

Etymology

The term "parasympatholytic" is derived from the Greek words "para" meaning "against", "sympatheia" meaning "sympathy", and "lytikos" meaning "able to loosen". Thus, parasympatholytics are agents that inhibit or counteract the effects of the parasympathetic nervous system.

Function

Parasympatholytics work by blocking the acetylcholine receptors in the PNS, thereby inhibiting the transmission of parasympathetic nerve impulses. This results in a reduction of various bodily functions that are regulated by the PNS, such as heart rate, digestion, and salivation.

Related Terms

Anticholinergic: A broader term for drugs that block the action of acetylcholine, including both parasympatholytics and antimuscarinics.
Parasympathomimetics: The opposite of parasympatholytics, these drugs mimic the action of the PNS.
Acetylcholine: A neurotransmitter in the PNS that parasympatholytics work to block.
Parasympathetic nervous system: The part of the nervous system that parasympatholytics inhibit.

Uses

Parasympatholytics are used in the treatment of various medical conditions, including Parkinson's disease, chronic obstructive pulmonary disease (COPD), and certain types of poisoning. They are also used in surgical procedures to reduce salivation and other bodily secretions.

Side Effects

Common side effects of parasympatholytics include dry mouth, blurred vision, constipation, and urinary retention. In severe cases, they can cause confusion, hallucinations, and other cognitive impairments.

External links

Medical encyclopedia article on Parasympatholytics
Wikipedia's article - Parasympatholytics

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Parasympatholytics