The hypothesis ‘Greater in the lipid solubility of the compound in olive oil, the greater is its anesthetic potency’is referred to as –
**Core Concept**
The concept being tested is the relationship between the lipid solubility of an anesthetic compound and its potency. This principle is based on the Meyer-Overton hypothesis, which posits that the anesthetic potency of a compound is inversely correlated with its molecular weight and directly correlated with its lipid solubility.
**Why the Correct Answer is Right**
The Meyer-Overton hypothesis suggests that anesthetics exert their effects by dissolving in the lipid bilayer of cell membranes, thereby disrupting normal membrane function. Compounds with higher lipid solubility are more likely to dissolve in the lipid bilayer, leading to a greater disruption of membrane function and a greater anesthetic potency. This hypothesis is supported by the observation that anesthetics with higher lipid solubility tend to be more potent and have a lower minimum alveolar concentration (MAC).
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the Meyer-Overton hypothesis. While it is true that lipid solubility is an important factor in anesthetic potency, the hypothesis specifically states that the relationship is inversely correlated with molecular weight, not directly correlated with potency.
**Option B:** This option is incorrect because it misstates the relationship between lipid solubility and anesthetic potency. The Meyer-Overton hypothesis suggests that higher lipid solubility leads to greater potency, not lower potency.
**Option C:** This option is incorrect because it does not accurately describe the Meyer-Overton hypothesis. While it is true that anesthetics exert their effects by dissolving in cell membranes, the hypothesis specifically states that the relationship between lipid solubility and potency is inversely correlated with molecular weight.
**Clinical Pearl / High-Yield Fact**
The Meyer-Overton hypothesis is a classic example of a pharmacological correlation that has been largely superseded by more modern theories of anesthetic action, such as the concept of anesthetic targets. However, it remains an important historical reference and a useful teaching tool for understanding the relationship between lipid solubility and anesthetic potency.
**Correct Answer: C. The Meyer-Overton hypothesis**