In cockroach alary muscles are associated with -

Answer

### Step-by-Step Solution:

1. **Identify the Context**: The question asks about the association of alary muscles in cockroaches.

2. **Locate Alary Muscles**: Alary muscles are found in the heart wall of cockroaches.

3. **Understand the Function**: These muscles play a crucial role in the functioning of the heart, specifically in the circulation of blood.

4. **Relate to the Blood Vascular System**: Since the alary muscles are located in the heart wall, they are associated with the blood vascular system of the cockroach.

5. **Type of Blood Vascular System**: It is important to note that the blood vascular system in cockroaches is of the open and lacunar type, which means that the blood is not always contained within blood vessels.

6. **Conclusion**: Therefore, the alary muscles in cockroaches are associated with the blood vascular system.

### Final Answer:
In cockroaches, alary muscles are associated with the blood vascular system.

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