Large intestine — Anatomy Notes, Diagram & Quiz

The Large intestine is located in the abdomen. Absorbs water and forms feces. The Large intestine extends from the ileocecal junction to the anus, framing the small intestine.

Large intestine highlighted in a 3D model of the human body
Large intestine highlighted in the 3D body atlas. 3D atlas: BodyParts3D (DBCLS, CC BY-SA 2.1 Japan); Écorché/Z-Anatomy (CC BY-SA 4.0). Rendered in anotemy.

Key facts

Large intestine at a glance
LocationAbdomen
Main functionAbsorbs water and forms feces.
Layerorgans
Key fact 1The Large intestine extends from the ileocecal junction to the anus, framing the small intestine.
Key fact 2The Large intestine includes the cecum, colon, rectum, and anal canal.
Key fact 3The Large intestine absorbs water and electrolytes, housing gut microbiota that ferment undigested material.

Where is the Large intestine located?

The Large intestine is located in the abdomen.

The Large intestine extends from the ileocecal junction to the anus, framing the small intestine.

What does the Large intestine do?

Absorbs water and forms feces.

The Large intestine includes the cecum, colon, rectum, and anal canal.

What to know for exams

  • The Large intestine extends from the ileocecal junction to the anus, framing the small intestine.
  • The Large intestine includes the cecum, colon, rectum, and anal canal.
  • The Large intestine absorbs water and electrolytes, housing gut microbiota that ferment undigested material.

It belongs to the organs layer. Learn its location, relations, and the structures it works with.

Clinical relevance

The Large intestine absorbs water and electrolytes, housing gut microbiota that ferment undigested material.

Link the large intestine to its blood supply, innervation and relations. That is how exam questions usually test it.

Memory aid: Large intestine

The Large intestine extends from the ileocecal junction to the anus, framing the small intestine. The Large intestine includes the cecum, colon, rectum, and anal canal. The Large intestine absorbs water and electrolytes, housing gut microbiota that ferment undigested material.

Chain it as location → function → clinical link when you revise.

Large intestine anatomy quiz

Five questions. Open each answer after you commit to a response.

  1. Where is the Large intestine located?

    Reveal answer

    Abdomen

  2. What is the main function of the Large intestine?

    Reveal answer

    Absorbs water and forms feces.

  3. Give one key fact about the Large intestine.

    Reveal answer

    The Large intestine extends from the ileocecal junction to the anus, framing the small intestine.

  4. Give another key fact about the Large intestine.

    Reveal answer

    The Large intestine includes the cecum, colon, rectum, and anal canal.

  5. What clinical link is associated with the Large intestine?

    Reveal answer

    The Large intestine absorbs water and electrolytes, housing gut microbiota that ferment undigested material.

Common questions

Where is the Large intestine located?

The Large intestine is located in the abdomen. The Large intestine extends from the ileocecal junction to the anus, framing the small intestine.

What does the Large intestine do?

Absorbs water and forms feces. The Large intestine includes the cecum, colon, rectum, and anal canal.

What is a key fact about the Large intestine?

The Large intestine absorbs water and electrolytes, housing gut microbiota that ferment undigested material.

What layer does the Large intestine belong to?

It belongs to the organs layer of the body.

What should I remember for exams?

The Large intestine extends from the ileocecal junction to the anus, framing the small intestine. The Large intestine includes the cecum, colon, rectum, and anal canal. The Large intestine absorbs water and electrolytes, housing gut microbiota that ferment undigested material.

Sources

  1. Standring, S. (ed.). Gray’s Anatomy, 42nd edition. Elsevier, 2020.
  2. TeachMeAnatomy — anatomy library
  3. Kenhub — anatomy library
  4. StatPearls / NCBI Bookshelf — Large intestine search

3D atlas and image credits

Anatomy models: BodyParts3D, © Database Center for Life Science (DBCLS), CC BY-SA 2.1 Japan. Écorché by Charleeh, derived from BodyParts3D and Z-Anatomy, CC BY-SA 4.0. Rendered in anotemy. Changes: highlighting, framing, labels and background removal. Images: CC BY-SA 4.0.

The 3D models are third-party assets under Creative Commons share-alike licences. They keep those licences; the page text is separate. If you reuse an image, keep the attribution and the share-alike licence.