Poisoning with Organophosphate (OP) Insecticides Is Often Correlated with Signs

question 5

Multiple Choice

Poisoning with organophosphate (OP) insecticides is often correlated with signs of increased parasympathetic nervous system activity, such as excessive salivation, constricted pupils, vomiting and diarrhea, and the antidote of choice for such a toxicity is atropine. A specific neurotransmitter is implicated for the clinical signs mentioned when OPs are ingested over time. Name the neurotransmitter.

• A)Seratonin
• B)Dopamine
• C)Norepinephrine
• D)Acetylcholine
• E)Gamma aminobutyric acid

---

Definitions:

Vitreous Humor

The clear, gel-like substance that fills the space between the lens and the retina in the eyeball, helping it maintain shape.

Choroid

A layer of blood vessels and connective tissue between the sclera and retina in the eye, providing oxygen and nutrients to the outer layers of the retina.

Cycloplegia

Paralysis of the ciliary muscle of the eye, resulting in a loss of accommodation and inability to focus on near objects, often as an effect of certain drugs or conditions.

Ciliary Muscles

A ring of smooth muscle in the eye's middle layer that changes the lens shape for focusing.