micturition reflex

English Thesaurus

1. relaxation of the urethral sphincter in response to increased pressure in the bladder (noun.act)

hypernym	:	inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex,
definition	:	an automatic instinctive unlearned reaction to a stimulus (noun.act)