With regards to the anorectal angle, what is true: (A) It distributes intraabdominal forces onto the pelvic floor and plays and impoant role in continence mechanism, (B) It is due to the pull of the external sphincter, (C) It is around 30 degrees at trest, (D) The angle increases at the time of defecation
Answer is A. Answer- A. It distributes intraabdominal forces onto the pelvic floor and plays and impoant role in continence mechanismAt rest the puborectalis muscle creates a 'sling' around the distal rectum, forming a relatively acute angle (Anorectal angle).It is 90 to 100 degrees at rest.Both the internal and external sphincters are innervated by pudendal nerve.