Multiple choice

Alary muscle is associated with

  1. heart and circulation

  2. malpighian tubules and excretion

  3. trachea and respiration

  4. None of the above

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A Correct answer
Explanation

The alary muscles, so named because of their general wing or delta shape in many insects, lie immediately on top of the dorsal diaphragm. Each chamber has a pair of alary muscles which expand and contract to facilitate the flow of haemolymph through the heart.