Read Anus and Rectum related articles:

Anus and Rectum »

The anus leads to the sphincter (bum-hole) – the tight circle of muscle that contracts and loosens to allow the passage of faeces (poo) out of the body. The rectum is that part of the alimentary tract that leads to the anus. Both the anus and rectum can become involved in penetrative sexual activity.

Continue reading