Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Radius Rw of circular motion and rotation frequency Ωw of MCE sperm at the wall, as a function of scaled midpiece curvature c0(m)Lm. Irregular motion in the transition region is ignored. Only sperm with moderate preferred curvature c0(m) roll at the wall. Ωw vanishes for c0(m) = 0 for symmetry reasons. Sperm with c0(m)Lm > 0.8 cannot rotate due to head-wall repulsion.
