What might be mistaken for a waterslide in this image is actually the breathing tube, or trachea, of a dragonfly. This tube connects to openings in the insect's exoskeleton (outer “shell”) called ...

This colorscape of tubes and grooves is a cross section through the reproductive region of a fern. Ferns use spores to reproduce and spread, and here we can see these spores (blue/purple) encased in ...

The ventral nerve cord is the area of the fruit fly’s nervous system that controls most of its movement, also called its motor functions. There are a variety of different broad classes of neurons that ...