Sebaceous glands eliminate certain substances like.... through sebum.

Options

A. sterols, hydrocarbons and waxes
B. NaCl , urea and lactic acid
C. sterols, hydrocarbons , urea waxes
D. NaCl , sterols, hydrocarbons , urea

Answer

To solve the question regarding what substances are eliminated by sebaceous glands through sebum, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Function of Sebaceous Glands**:
- Sebaceous glands are microscopic exocrine glands located in the skin. They are responsible for producing sebum, an oily or waxy substance that lubricates and protects the skin and hair.

2. **Identify the Components of Sebum**:
- Sebum is primarily composed of various substances, including lipids. The main components include sterols, hydrocarbons, and waxes.

3. **Evaluate the Given Options**:
- **Option 1**: Sterols, hydrocarbons, and waxes.
- This option includes the correct components found in sebum.
- **Option 2**: NaCl, Urea, and Lactic Acid.
- These substances are not typically associated with sebum.
- **Option 3**: Sterols, Hydrocarbons, Urea, and Waxes.
- This option includes urea, which is not a component of sebum.
- **Option 4**: NaCl, Sterols, Hydrocarbon, and Urea.
- This option also incorrectly includes urea and NaCl.

4. **Select the Correct Answer**:
- After evaluating all options, the correct answer is **Option 1: Sterols, hydrocarbons, and waxes**, as these are the substances eliminated by sebaceous glands through sebum.

### Final Answer:
The substances eliminated by sebaceous glands through sebum are **Sterols, Hydrocarbons, and Waxes**.

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