| A | B |
|---|
| Identify the location where most nutrients are absorbed. | Small Intestines |
| Where is the first site of chemical digestion? | Mouth |
| What causes chemical digestion in the mouth? | Saliva |
| Identify the location where most water is absorbed. | Large Intestines |
| Where are villi found? | Small Intestines |
| What is peristalsis? | Waves of contractions in the muscles |
| Identify the enzyme found in the mouth that breaks down starches. | Ptyalin |
| Name two ways food is broken down. | Mechanical (chewing) & Chemical (enzymes) |
| What is the purpose of pepsin? | To break down protein in the stomach |
| Identify the flap of tissue that protects the windpipe from unwanted objects. | Epiglottis |
| How does the pancreas assist in the digestion process? | Produces pancreatic juices to break down proteins, starches, and fats |
| Identify the purpose of the digestive system. | Break down food into simpler substances for use by the body; allow molecules to be absorbed into the bloodstream; elimate solid wastes |
| How does the liver assist in the digestive process? | Produces bile to break down large fat particles |
| What is the purpose of villi? | To increase the surface area in the small intestines for faster absorption |
| Identify three places peristalsis is used. | Throat, stomach, small intestines, large intestines |
| Identify the pathway food takes through the digestive system. | Mouth - esophagus - stomach - small intestines - large intestines - rectum - anus |
| What is the purpose of hydrochloric acid? | To kill bacteria in the stomach and allow the pepsin to a more efficient job |
| Why is mucus important? | It assists with food movement down the esophagus and provides a protective coating for the stomach lining - Mucus is our friend! |
| What is the purpose of the gallbladder? | To store bile |
| What is the purpose of bile? | To break down fats |
| Why is the liver, gall bladder, and pancreas mentioned with the digestive system if food does not pass through them? | They assist the small intestines with chemical digestion; their enzymes are inserted in the small intestines |
| Explain the difference between the rectum and the anus. | The rectum is the holding site for solid wastes until it is ready to exit the body; the anus is the site solid wastes exit the body |
