EVERYDAY SCIENCE

Detailed explanation-1: -Air enters the respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects, lead to the internal respiratory system, a densely networked array of tubes called tracheae.

Detailed explanation-2: -The trachea are tubes that are strengthened by rings of cuticle. From the trachea the air moves into smaller tubes called tracheoles that spread throughout the body of the insect and allow oxygen to be delivered to the various parts of the body.

Detailed explanation-3: -For insects, respiration is separate from the circulatory system. Oxygen and carbon dioxide gases are exchanged through a network of tubes called tracheae. Instead of nostrils, insects breathe through openings in the thorax and abdomen called spiracles.

Detailed explanation-4: -Spiracles are openings of a network of tubes called tracheae which allows air to enter and exit the insect body. Air enters through the spiracles into the tracheal tubes and diffuses into the body tissues.

Detailed explanation-5: -Most insects have a respiratory system akin to ventilation in a building. Tubes called tracheae run throughout their bodies delivering oxygen. The main airways get smaller as they branch off into their tissues. The tubes open to the outside air through vents called spiracles.