Large intestine

Definition

The large intestine is a crucial part of the digestive system responsible for absorbing water and electrolytes from indigestible food matter. It also compacts waste into feces for excretion.

5 Must Know Facts For Your Next Test

1. The large intestine includes the cecum, colon, rectum, and anal canal.
2. It absorbs approximately 1.5 liters of water per day.
3. Gut microbiota in the large intestine aids in fermentation of undigested carbohydrates.
4. A lack of fiber can lead to constipation and other gastrointestinal issues within the large intestine.
5. Vitamin K and certain B vitamins are synthesized by bacteria in the large intestine.

Review Questions

• What are the primary functions of the large intestine?
• How does gut microbiota contribute to nutrient absorption in the large intestine?
• Why is fiber important for maintaining healthy function of the large intestine?

Related terms

Small Intestine:

A digestive organ where most nutrient absorption occurs before food reaches the large intestine.

Cecum: The first part of the large intestine that connects with the ileum of the small intestine.

Gut Microbiota:

The community of microorganisms living in the gastrointestinal tract that aid digestion and produce vitamins.