A Person Taking a Histamine (H₂) Blocker or a Proton

question 123

Multiple Choice

A person taking a histamine (H₂) blocker or a proton pump inhibitor to relieve excess stomach acid production often finds a return of symptoms that is worse with a missed dose. Which statement about the effects these medications have on gastrin is FALSE?

• A) Acid -blocking medications interrupt the negative feedback on gastrin release and are therefore self -limiting in their use.
• B) High circulating levels of gastrin accompany acid -blocking medication use and, if interrupted, a pronounced rebound effect of excess stomach acid ensues.
• C) Acid blockers have no direct effect on gastrin, but inhibit acid production through other mechanisms.
• D) Decreased acid production inhibits inhibition of gastrin release into the bloodstream, thereby disrupting its negative feedback mechanism.
• E) Return of symptoms by excess gastrin's influence on acid production stimulates further medication use, thereby leading to a chronic consumption.

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Definitions:

MR = MC

A principle in economics where the optimal level of production is reached when Marginal Revenue (MR) equals Marginal Cost (MC).

P < AVC

A condition where the price (P) of a good is less than the average variable cost (AVC), indicating a firm is not covering its variable costs and may cease production in the short run.

Average Total Cost

Average Total Cost is the total cost of production divided by the quantity produced, encompassing both fixed and variable costs.

Profit-maximizing

A process or strategy that firms employ to determine the price and output level that leads to the highest profit.