Figure 9.

Peristaltic waves of body contractions and propulsive stresses. (a) Kymograph of S. mansoni body width moving under severe confinement (100 µm gap). (b) Kymograph of longitudinal traction stress recorded simultaneously with body width for the same worm. The dashed lines in both kymographs correspond to peristaltic waves of body width and longitudinal traction stress propagating backward. The worm images to the left show instantaneous body width and traction stress measurement along the worm's centreline. (Online version in colour.)