An ‘Antiseptic’ means –
**Core Concept**
An antiseptic is a chemical or agent used to reduce the growth of microorganisms on living tissues, typically applied to skin or mucous membranes to prevent infection. Antiseptics work by disrupting the cell membrane of microorganisms, thereby inhibiting their growth or replication.
**Why the Correct Answer is Right**
Antiseptics are distinct from disinfectants, which are used to kill microorganisms on non-living surfaces. The primary mechanism of antiseptics involves the disruption of the cell membrane of microorganisms, often through the use of surfactants or detergents. This action prevents the microorganisms from reproducing and ultimately leads to their death.
**Why Each Wrong Option is Incorrect**
**Option A:** Disinfectant - Disinfectants are used to kill microorganisms on non-living surfaces, whereas antiseptics are applied to living tissues.
**Option B:** Sterilant - Sterilants are used to eliminate all forms of microbial life, whereas antiseptics reduce the growth of microorganisms.
**Option C:** Antiviral - Antiviral agents target specific viruses, whereas antiseptics are broad-spectrum agents that affect a wide range of microorganisms.
**Clinical Pearl / High-Yield Fact**
When using antiseptics, it is essential to note that they can also have cytotoxic effects on human cells, particularly at high concentrations or prolonged exposure. This emphasizes the importance of using antiseptics judiciously and following proper guidelines for their application.
**Correct Answer: C.**