insect respiratory system (tracheal system). cross section through the abdomen illustrating of the tracheation.

insect respiratory system tracheal cross abdomen illustrating tracheation insects possess unique consists network tiny tubes called tracheae extend body deliver oxygen cells allowing bypass lungs organs openings spiracles typically located sides insect's opened closed regulate gas exchange spiracle morphology arthropods trachea biology entomology structure internal zoology invertebrates system insect tracheation tracheae spiracle abdomen morphology arthropods trachea tracheal biology entomology structure zoology