Small Intestine

What is the main function of the duodenum?

Digestion; receives bile and pancreatic enzymes.

What is the function of the jejunum and ileum?

Nutrient absorption.

What increases surface area in the small intestine?

Villi and circular folds.

What is the hepatic portal system?

Blood vessels carrying absorbed nutrients to the liver.

What does sucrase break down?

Sucrose → monosaccharides.

What does lactase break down?

Lactose → glucose + galactose.

What does maltase break down?

Maltose → glucose.

What does trypsin break down?

Proteins → amino acids.

What does lipase break down?

Lipids → fatty acids + glycerol.

What does amylase break down?

Starch → maltose.

What does bile do?

Emulsifies (merge) fats.