Anus

The anus is the opening at the end of your digestive system — it's where poo leaves the body. Everyone has one. It also comes up in conversations about sex because the area has nerve endings that make it sensitive to touch.

• The anus is the opening at the very end of the digestive tract.
• It's controlled by muscles called sphincters that open and close.
• The area has lots of nerve endings, which is why it's sensitive.
• It doesn't produce its own lubrication — important if it's involved in sexual activity.
• Keeping the area clean is just normal hygiene. Nothing complicated.

[DIAGRAM: Labelled diagram showing location of the anus in relation to surrounding anatomy]

Where it is and what it does

The anus sits between your buttocks, behind the genitals. Just in front of it is the perineum — the small area of skin between the genitals and bum. Inside the anus is a short passage called the rectum, which connects to the rest of the digestive system.

Two rings of muscle — called sphincters — control the opening. One works automatically, the other you can control yourself. Their main job is pretty obvious: they let waste leave your body when you go to the toilet.

Why it comes up in sex ed

The nerve endings around the anus mean some people find touch there pleasurable. That's why it's relevant to conversations about anal sex. But the anus is first and foremost part of your digestive system — not everything about it is about sex.

Hygiene

Wiping front to back matters, especially for people with a vulva — it stops bacteria from the anus getting near the urethra or vagina, which can cause infections like UTIs. Normal washing with water and mild soap is all you need to keep the area clean.

Things people get wrong

"It's dirty." The anus is part of your waste system, so yes, bacteria live there. But that's true of lots of parts of the body. Normal hygiene handles it.

"It's embarrassing to talk about." Loads of people feel a bit awkward about it. But it's just a body part — everyone has one. Doctors deal with questions about it every day.

Things people ask about the anus

Is it normal for the skin around it to be darker?

Yes. The skin around the anus is often a different shade to the rest of your body. That's completely normal and varies from person to person.

What if something feels wrong down there?

Things like haemorrhoids (swollen blood vessels — can be itchy or sore) and small tears are common and usually not serious. But if you notice pain or bleeding, see a doctor. They genuinely won't be fazed — they see it all the time.

Where to get help

• Your GP — for any pain, bleeding, or concerns. They've seen it all.
• NHS 111 — for advice on whether something needs a doctor's visit.

The opening at the end of your bum where poo leaves the body is called the anus. Everyone has one. It is part of the system that breaks down food and gets rid of waste.

It sits between your buttocks, behind the private parts at the front. Two rings of muscle control the opening. One works on its own and the other you can control yourself. Their main job is to let waste leave your body when you go to the toilet.

The skin around this area has lots of nerve endings, which means it is sensitive to touch. That is why it sometimes comes up in conversations about sex. But it is first and foremost part of how your body gets rid of waste.

Keeping the area clean is simple. When you wipe after using the toilet, it is best to wipe from front to back. This is especially important for girls and women because it stops germs from getting near the opening where you wee, which can cause infections.

The skin around this area is often a different shade to the rest of your body. That is completely normal. If you ever have pain or bleeding there, see a doctor. They will not be embarrassed. They deal with this every day.