Insect Respiratory System Concepts

Insects like cockroaches and houseflies respire through a tracheal system, a network of tubes that permeate their bodies. Air enters through spiracles, tiny pores on body segments, leading to tracheal chambers. The trachea branches reach every cell, delivering oxygen directly. Abdominal movements facilitate air intake and expulsion, with expansion drawing air in and contraction pushing it out through the spiracles.

What is the primary system responsible for respiration in insects like cockroaches and houseflies?

• Nervous system

• Circulatory system

• Digestive system

• Tracheal system

Through what structures does the trachea open to the exterior in insects?

• Gills

• Lungs

• Pores

• Spiracles

Where are spiracles typically located on an insect's body?

• On the wings

• On the head

• On either side of the body segments

• On the legs

What happens when the abdomen of an insect expands?

• Water is absorbed

• Food is digested

• Air is expelled

• Air is taken in

How do insects expel air from their bodies?

• Through their mouths

• Through their legs

• By contracting their wings

• By contracting their abdomen