Question
Which of the following does not contribute to the formation of anorectal ring in human beings?
| A. |
External anal sphincter |
| B. |
Puborectalis |
| C. |
Anococcygeal raphe |
| D. |
Internal anal sphincter |
Show Answer
|
Correct Answer � C Explanation |
 |
Answer- C (Anococcygeal raphe)
Anorectal ring is a muscular ring present at the anorectal junction. It is formed by the fusion of the Puborectalis, uppermost fibres of external sphincter and the internal sphincter.
(Ref- BDC 5/e Vol- III/p428, Maingot 11/e p 663)