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Small Intestine Structure/Function

Author: Amanda Soderlind

Small Intestine

Source: Video and Images Created by Amanda Soderlind

Video Transcript
Terms to Know
Amylase

An enzyme that breaks down carbohydrates in the digestive system.

Duodenum

The first section of the small intestine, where most of the digestive enzymes are secreted.

Ileum

The last section of the small intestine which connects to the large intestine, where most of the lipids are absorbed.

Jejunum

The middle section of the small intestine, where most of the absorption of carbohydrates and proteins occurs.

Lipase

An enzyme that breaks down fats in the digestive system.

Microvilli

Hair-like projections that cover villi and aid in absorption of nutrients.

Peristalsis

Wave-like muscle contractions.

Small Intestine

A part of the digestive tract where the majority of nutrients are absorbed.

Villi

Small finger-like projections that line the mucosa and act to increase surface area and absorb nutrients.