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Science: Chapter 14-6
What is the digestive system?
18
Science
6th Grade
07/09/2008

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Cards

Term
What is the process of breaking down food so that it can be used by living things?
Definition
digestion
Term
What happens to food during digestion?
Definition
  1. larger pieces of food are broken down into smaller pieces
  2. complex molecules in food are changed into simpler molecules
Term
What is the digestive tract?
Definition

a coiled tube inside your body that food moves through

 

It is about 10 meters long and starts at your mouth and ends at your rectum.

Term
What 3 organs are NOT part of your digestive system but do help with digestion?
Definition
  1. liver: makes bile
  2. pancreas: releases digestive juices
  3. gall bladder: stores bile
Term
What happens in the mouth?
Definition
  1. food enters the digestive tract here
  2. food is chewed and mixed with saliva
Term
What is the liquid in the mouth that helps in digestion?
Definition
saliva
Term
Where does food go after the mouth?
Definition

pharynx

 

Term
Describe the pharynx.
Definition
  1. passageway for food AND air
  2. leads to 2 tubes: esophagus and trachea
Term
What is the tube that connects the mouth to the stomach?
Definition
esophagus
Term
What is the tube that connects the mouth to the lungs?
Definition
trachea (windpipe)
Term
What is the flap of tissue that STOPS food from going down the trachea?
Definition
epiglottis
Term
Where does the food go after the esophagus?
Definition
to the stomach
Term
Where does the food go after the stomach?
Definition

to the small intestine

Term

Where does the food go after

the small intestine?

Definition
to the large intestine
Term
Where does the food go after the large intestine?
Definition
to the rectum
Term
List the order that food travels in the digestive tract.
Definition
  1. mouth
  2. pharynx
  3. esophagus
  4. stomach
  5. small intestine
  6. large intestine
  7. rectum
Term
What is the job of mucus in the digestive tract?
Definition
It is secreted in the walls of the esophagus to help the food move more easily.
Term
What is the wavelike movement that moves food through the digestive tract?
Definition
peristalsis
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