The main muscles controlling functioning oftracheae of insects are

Options

A. Alary
B. Tergosternal
C. Both above
D. None above

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the main muscles that control the functioning of tracheae in insects. The tracheae are the respiratory tubes that facilitate gas exchange in insects.

2. **Identifying the Options**: The video mentions different types of muscles, including allery muscles and tergosteronal muscles. We need to focus on which of these muscles is responsible for the functioning of the tracheae.

3. **Analyzing Allery Muscles**: Allery muscles are found in the heart walls of cockroaches and are primarily involved in circulation, not directly in the functioning of the tracheae.

4. **Analyzing Tergosteronal Muscles**: Tergosteronal muscles are located in the trachea of cockroaches. These muscles help decrease the pressure within the trachea, facilitating the movement of air in and out of the tracheal system.

5. **Conclusion**: Based on the analysis, the main muscles controlling the functioning of tracheae in insects are the **tergosteronal muscles**.

**Final Answer**: Tergosteronal muscles.

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