Earthworms move through the soil not just by wriggling around, but by sending peristaltic waves down their bodies. A new robot, which employs that same strategy, could one day be used in underground ...
Swallowing (a) evokes a peristaltic wave of contraction that migrates smoothly from the striated to smooth muscle esophagus. Simultaneous electrical activation of all vagal efferent neurons (b) ...