Trichogen cell in the body wall secretes

Options

A. epicuticle
B. exocuticle
C. endocuticle
D. cuticular seta

Answer

To answer the question regarding what the trichogen cell in the body wall secretes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Trichogen Cell**:
- Trichogen cells are specialized cells found in the epidermis of insects. They play a crucial role in the formation of sensory structures.

2. **Understand the Structure of the Insect Integument**:
- The insect integument consists of multiple layers. The outermost layer is called the apicuticle, followed by the axocuticle, and the innermost layer is the endocuticle.

3. **Function of Trichogen Cells**:
- Trichogen cells are responsible for secreting components that contribute to the formation of bristles or setae on the insect's body. These structures are known as cuticular setae.

4. **Identify the Correct Option**:
- Given the options: apicuticle, axocuticle, endocuticle, and cuticular seta, the correct answer is cuticular seta, as this is what is formed by the secretion of trichogen cells.

5. **Conclusion**:
- The trichogen cells secrete cuticular setae, which serve as sensory organs and contain nerve endings.

### Final Answer:
The trichogen cell in the body wall secretes **cuticular seta**.

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