Anus facts for kids
The anus is the opening at the very end of your digestive system. This is where your body gets rid of feces (also called stool or poop), which is the waste left over after your body has used all the good parts of the food you eat.
How the Anus Works
The anus is an important part of your body's waste removal system. It has special muscles called sphincters that control when waste leaves your body. Think of them like elastic bands that can open and close.
Sphincter Muscles
There are two main sphincter muscles in the anus:
- The internal anal sphincter is a muscle that you cannot control. It is always slightly contracted to prevent stool from leaking out.
- The external anal sphincter is a muscle you can control. You use this muscle to hold in poop until you are ready to go to the bathroom.
When your body is ready to get rid of waste, the internal sphincter relaxes. This sends a signal to your brain that it's time to find a toilet. Then, when you are ready, you can relax your external sphincter to allow the feces to pass out of your body.
Why the Anus is Important
The anus plays a vital role in keeping your body healthy. It is the final step in the digestive process. After food travels through your stomach and intestines, all the nutrients are absorbed. What's left is waste material that your body doesn't need. The anus makes sure this waste leaves your body cleanly and efficiently.
If you ever have pain, itching, or notice anything unusual around your anus, it's a good idea to talk to a trusted adult or a doctor. They can help you understand what's happening and how to feel better.
See also
In Spanish: Ano para niños
