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Digestion
Facts about Digestion in Humans
36
Science
7th Grade
12/15/2009

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Term
salivary glands
Definition
These secrete digestive enzymes to begin the digestive process in the mouth.
Term
esophagus
Definition
This moves the food into the stomach.
Term
liver
Definition
This is an important warehouse for the body's nutrients.
Term
stomach
Definition
This secretes juices that continue to break food particles down after they have passed through the esophagus.
Term
gall bladder
Definition
This organ is where bile is stored.
Term
pancreas
Definition
This secretes juices that help the digestion of food in the small intestine. It also secretes insulin, an important hormone that regulates glucose levels in the blood.
Term
small intestine
Definition
In this organ, the body chemicals act with food and nutrients, which are absorbed into the blood.
Term
large intestine
Definition
In this organ, leftover food that is of no use to the body is processed for elimination
Term
bile
Definition
This substance is stored in the gall bladder.
Term
enzymes
Definition
These proteins help to break down food. In the mouth, these are secreted by the salivary glands.
Term
stomach
Definition
The esophagus moves food into what organ in the digestive system?
Term
pancreas
Definition
This organ secretes insulin
Term
sugar
Definition
Saliva in your mouth contains enzymes that break down starch and turn it into this.
Term
about three hours
Definition
This is how long a meal stays in your stomach.
Term
up to three days
Definition
This is how long it takes for food you eat to pass through your body
Term
fuel
Definition
This is what food supplies to power your body.
Term
esophagus
Definition
This is also called the food tube.
Term
contract
Definition
What stomach muscles do in order to break down food.
Term
hydrochloric acid
Definition
The type of acid that is found in the stomach.
Term
mucus
Definition
The lining that prevents hydrochloric acid in the stomach from eating through the stomach wall.
Term
with the eyes and nose when we see and smell food
Definition
Where does digestion start? (trick question!)
Term
7 meters for an adult
4 meters for a kid
Definition
How long is the small intestine?
Term
About 2 meters
Definition
How long is the large intestine?
Term
1 liter
Definition
How much saliva do you make every day?
Term
pyloric
Definition
This valve allows chyme to move from the stomach to the small intestines.
Term
waste
Definition
This is what is left over after your body has squeezed all of the nutrients from the foods you eat.
Term
mechanical digestion
Definition
The type of digestion in which food is chewed, mixed, and churned
Term
chemical digestion
Definition
The type of digestion in which chemical reactions break down food
Term
digestion
Definition
This is the name for the process by which food is broken down into small molecules that can be absorbed by the blood
Term
enzymes
Definition
These are a type of protein that speeds up the rate of chemical reaction in your body
Term
tongue, teeth, salivary glands, pancreas, liver, and gall bladder
Definition
What are the "accessory" organs in the digestive system? Food never actually passes through these organs.
Term
mouth, esophagus, stomach, small intestine, large intestine
Definition
While being digested food travels through these five organs.
Term
peristalsis
Definition
This term refers to waves of muscle contractions in the body. In the digestive system, this process causes food to break down.
Term
chyme
Definition
Food is converted into this thin, watery liquid after being broken down in the stomach.
Term
villi
Definition
These tiny wormlike processes on the mucous membrane of the small intestine, serve in absorbing nutriment.
Term
water
Definition
The large intestine absorbs this substance from undigested chyme.
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