Salivary glands of Cockroach open at

Options

A. Buccal cavity
B. Hypopharynx
C. Epipharynx
D. Pharaynx

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where the salivary glands of the cockroach open. We need to evaluate the given options: buccal cavity, hypopharynx, epipharynx, and pharynx.

2. **Evaluating the Options**:
- **Buccal Cavity**: The buccal cavity is the space inside the mouth of the cockroach. It has the mouth at one end and leads to the pharynx at the other end. Since the salivary glands do not open here, this option is incorrect.

- **Hypopharynx**: The hypopharynx is a short tubular structure that leads to the esophagus. It is known to be the correct answer because the salivary glands of the cockroach open into this structure. The hypopharynx acts like a tongue and plays a role in the digestive process.

- **Epipharynx**: The epipharynx is a small membranous structure located under the labrum (the upper mouthpart) and contains taste buds. Since it does not serve as an opening for the salivary glands, this option is incorrect.

- **Pharynx**: The pharynx is located behind the mouth and helps push food into the esophagus. However, it is not where the salivary glands open, making this option incorrect as well.

3. **Conclusion**: After evaluating all options, the correct answer is that the salivary glands of the cockroach open at the **hypopharynx**.

**Final Answer**: The salivary glands of the cockroach open at the hypopharynx.

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