Digestive System 1

The protective substance produced by columnar epithelial cells in the digestive tract is

• bile
• pepsin
• mucous
• hydrochloric acid

The primary function of the digestive system is to 

• break large molecules into small nutrient molecules
• facilitate gas exchange, releasing methane
• transport nutrients to body cells
• provide protection and support

The muscular tube that connects the mouth to the stomach is the

• Epiglottis
• Peristalsis
• Stomach
• Esophagus

This organ produces bile which helps break down fats in the small intestine  

• Mouth
• Liver
• Salivary Glands
• Large Intestine

In the _______ water and minerals are absorbed and waste material is stored.

• small intestine
• large intestine
• stomach
• mouth

The majority of the absorption of digested nutrients occurs in the

• Stomach
• Small Intestine
• Large Intestine
• Cecum

The villi are where the digestive system interacts with the __________________ system.

• circulatory
• respiratory
• muscular
• skeletal

What does the rectum do?

• chemically digests food
• stores solid waste 
• mechanically digests food
• produces bile

Chewing food with teeth and tongue is an example of 

• mechanical Digestion 
• chemical Digestion 

The energy released by the breaking of chemical bonds in food is measured in 

• degrees
• glucose molecules
• calories
• grams