Module 4 topic 4

How is the large intestine different from the small intestine?

The large intestine is wider but shorter than the small intestine, measuring about ¼ of the length of the small intestine.

What are the main functions of the large intestine?

A: The large intestine is responsible for:

• Movement of contents via peristalsis.

• Further digestion of proteins by bacteria.

• Water absorption.

• Formation of feces and defecation.

What are the main parts of the large intestine?

The large intestine consists of the ascending, transverse, descending, and sigmoid colons, along with the rectum and anal canal.

What is haustral churning in the large intestine?

Haustral churning is the uncoordinated contraction of bands of longitudinal muscle in the large intestine that churns food for further mechanical digestion.

What role do bacteria play in the large intestine?

Bacteria in the large intestine help digest proteins, produce vitamins, and aid in the fermentation of certain carbohydrates.

What happens if the large intestine becomes dysfunctional?

Dysfunction of the large intestine can lead to issues such as constipation, diarrhea, or malabsorption of water and nutrients.