Digestive and Excretory Systems

What does saliva do?

• Chemically digests food in the mouth.
• Chemically digests food in the stomach
• Protects the stomach from digesting iteself
• Absorbs nutrients from food so the body has energy.

Where does digestion begin?

• Mouth
• Esophagus
• Stomach
• Small Intestine

Tags

NGSS.MS-LS1-7

What organ makes bile?

• Gallbladder
• Liver
• Pancreas
• Appendix

What parts of the digestive system help with mechanical digestions?

• Esophagus and Small Intestine
• Mouth and Stomach
• Liver and Gallbladder
• Rectum and Anus

Why do we eat food?

• To keep our stomachs full
• To put oxygen into the body cells
• To get nutrients and energy
• To make waste products

Tags

NGSS.MS-LS1-7

Which of the following organs is NOT used during digestion?

• liver
• stomach
• mouth
• lungs

What happens to the material that is not absorbed by the small intestine?

• It is broken down into proteins in the stomach
•  It passes into the large intestine
• It is turned into sugar in the pancreas
• It moves to the liver

Bile is stored in a tiny sac located by your liver. What is the name of this tiny storage sac?

• large intestine
• gall bladder
• pancreas
• stomach

The esophagus has muscles which squeeze the food downwards. What is the name of these muscle contractions?

• peristalsis
• chyme
• bile
• bolus

What is the main function of the digestive system?

• to filter blood
• to break down and absorb nutrients
• to transport oxygen
• to send chemical messages