Rectum and Anus--The End!
{"Image DocumentName": "Rectum and Anus--The End!", "Image ImageDescription": "Defecation is evacuation of fecal material from rectum. Combination of voluntary and involuntary actions. Stool fills rectum, causing distension. Straightening of anorectal angle (90 deg) Involuntary relaxation of Int Anal Sphincter. To pass stool, puborectalis muscle holds angle and Ext Anal Sphincter relax.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}