Understanding the Lower Digestive tract: Small Intestine to Rectum Practice Test

The small intestine uses the villi to increase its surface area and facilitate absorption. Absorption does not occur in the stomach.

The villi allow multiple areas where digestive enzymes can be released by the small intestine. The stomach does not release digestive enzymes.

The villi act in a cilia-like motion and move food down the small intestine. Movement in the stomach is generated by smooth muscle contractions.

The small intestine uses villi to adhere to the food particles entering from the stomach, while the stomach has no need for such adhesion.