GENERAL HISTOLOGY

Detailed explanation-1: -Insects have spiracles on their exoskeletons to allow air to enter the trachea. In insects, the tracheal tubes primarily deliver oxygen directly into the insects’ tissues. The spiracles can be opened and closed in an efficient manner to reduce water loss.

Detailed explanation-2: -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. Insects that are diapausing or non-mobile have low metabolic rates and need to take in less oxygen.

Detailed explanation-3: -Spiracles. Spiracles are the openings of the tracheal system on the integument of the insect. Some apterygote and larval insects lack valves in their spiracles and therefore have trachea that are always open to the environment, although these are often covered with sieve-like plates.

Detailed explanation-4: -Respiration in insects such as cockroaches, houseflies, etc., occurs through a tracheal system. The tracheal system connects with the external environment through tiny pores on the insect’s abdomen and thorax called spiracles. A pair of spiracles are present on each body segment.

Detailed explanation-5: -In insects, gaseous exchange occurs through a network of tubes collectively known as the tracheal system. The small openings on the sides of an insect’s body are known as spiracles. Oxygen-rich air enters through the spiracles. The spiracles are connected to the network of tubes.