Digestive System

What is the purpose of the digestive system?

• To exchange gases in your body
• to get rid of waste in the body
• to break down food into nutrients the body can use
• to break down food into oxygen

What does the stomach have that protects it from acid (digestive juices)?

• A strong wall
• A mucus lining
• An opening to the small intestines
• enzymes

______ is the watery liquid that begins to chemically break down food in your mouth.

• salivary glands
• saliva
• mucus
• water

Food stays in your _____ for hours where it mixes with acid.

• mouth
• small intestines
• gallbladder
• stomach

Your ________ absorbs water and salt from undigested material before it leaves your body.

• small intestines
• large intestines
• stomach
• oesophagus

What do you call the organ that takes food from your mouth to your stomach?

• epiglottis
• oesophagus
• trachea
• small intestines

_________ in the small intestines absorb nutrients and put them into the blood.

• acid
• stomach
• oesophagus
• villi

When food mixes with acid in your stomach, we call the new liquid _______.

• enzymes
• villi
• chyme
• stomata

Most digestion takes place in this organ. It is really long.

• small intestines
• large intestines
• oesophagus
• pancreas

Food travels down your oesophagus through a wavelike motion called ____.

• gravity
• appendix
• peristalsis
• squeezing