Final answer:
The drugs that cause dry eyes, mouth, and difficulty in urinating and defecating are known as anticholinergic drugs. They block the action of acetylcholine in the parasympathetic system, leading to decreased bodily secretions and smooth muscle function. Oligurics are diuretics that increase the frequency of urination and are used to treat hypertension.
Step-by-step explanation:
The classification of drugs that create side effects such as dry eyes, dry mouth, difficulty urinating, and difficulty defecating is typically known as anticholinergic drugs. These drugs affect the parasympathetic nervous system by blocking the action of acetylcholine at muscarinic receptors. The inhibition of the cholinergic system can cause a decrease in bodily secretions leading to dry eyes and mouth, and can also affect smooth muscle function, which may result in difficult urinating and defecating.
Contrastingly, drugs that increase the frequency of urination are often diuretics or substances that promote diuresis, which is the increased production of urine. Diuretics like oliguric can work on the renal system, including the loop of Henle, where they inhibit the reabsorption of sodium and chloride ions, leading to increased urine output. Such drugs are commonly used to treat conditions like hypertension.