Large intestine

Definition

The large intestine is the final section of the digestive system in vertebrates, responsible for water absorption and feces formation. It includes the cecum, colon, rectum, and anal canal.

5 Must Know Facts For Your Next Test

1. The large intestine absorbs water and salts from the material that has not been digested as food.
2. It is home to a large population of bacteria which play a crucial role in breaking down waste and synthesizing vitamins.
3. The large intestine is approximately 1.5 meters long in adults.
4. Peristalsis in the large intestine moves waste towards the rectum for elimination.
5. Diseases affecting the large intestine include Crohn's disease, ulcerative colitis, and colorectal cancer.

Review Questions

• What are the primary functions of the large intestine?
• How does bacterial activity in the large intestine contribute to digestive health?
• Name at least two diseases that can affect the large intestine.

Related terms

small_intestine: The part of the digestive system where most nutrient absorption occurs.

peristalsis:

A series of wave-like muscle contractions that move food through the digestive tract.

cecum: A pouch connected to the junction of the small and large intestines.