SOLVED: Defecation reflexThe short reflex for defecation is activated when the presence of feces stimulateswords) , which send signals up to the brain and cause the urge to void: This also causes the relaxation of thewords).Ifit is an appropriate time to defecate thc rectum and sigmoid colon willword) and the Internal and external sphincters willword), causing defecation t0 occur:

Reflex Action - Definition, Process and Examples

Reflex | Definition, Classification & Examples