Evidence is presented here which shows that some insect spiracle muscles receive both excitatory and inhibitory innervation and that both types cooperate in the control of the normal activity of ...

The peculiar type of breathing exhibited by some insects is a cyclical pattern of opening and closing the spiracles, the apertures that connect the respiratory tracheal system with the exterior. 1 ...

Insects don’t have lungs. Their blood-like hemolymph doesn’t carry oxygen. Instead, they take in oxygen through a row of holes that sit along their sides–called spiracles. The spiracles ...