The muscles then contract reflexly, and pull the head of the bone into an unnatural position outside the capsule.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
This early sucking of the child accomplishes another purpose besides the obtaining of this important laxative-it also reflexly increases the contractibility of the muscles of the womb, which is an exceedingly important service just at this time.
"The Mother and Her Child"
William S. Sadler Lena K. Sadler
Here we are dealing with the effect of a volatile nitrogenous substance which reflexly causes the peristaltic motions for the laying of the egg in the female fly.
"Darwin and Modern Science"
A.C. Seward and Others