Difference between Rectum and Anus
No. |
Rectum |
Anus |
1. | Rectum refers as the part which is present in the last several inches of the large intestine and it is closest to the anus. | Anus refers as the part where gastrointestinal tract ends and it is a hole from which waste material leaves the body. |
2. | Rectum ends in an expanded section which is known as ampulla. | The anus is made up of skin type cells which is known as squamous cells. |
3. | The rectum is about 12 to 16 cm long. | The anus is 2 inches long canal. |
4. | Rectum is divided into three parts and are Intraperitoneally (upper third lies), Retroperitoneally (middle third) and extraperitoneally (lower third). | Anus contains two types of muscles and are internal sphincter muscle and external sphincter muscle. The part which connects anus and rectum is called as squamocolumnar junction. |
5. | Rectum is responsible for the water absorption and electrolytes absorption. | Anus is responsible for the passing of stool out of the body. |