Download Digestive System Webquest

The Digestive System
The cells in your body need a constant supply of nutrients. These nutrients
supply energy and the building blocks needed to manufacture body substances.
The food we eat is not in the proper form. It must be broken down into small
particles that are able to pass through the cells. The breakdown process is called
digestion. After the breakdown, the circulatory system carries the food to the
cells. The food enters that system through the process of absorption.
In this unit, you will be studying these two chief functions of the digestive
system along with the diseases of this system.
Access the following site to answer the following questions:
http://www.acm.uiuc.edu/sigbio/project/digestive/index.html
Why Digestion?
1. Name the two main functions of the digestive system.
2. What are two other names for the digestive tract?
Early Digestion: The Mouth
3.
4.
5.
6.
What are the digestive purposes of the mouth?
Differentiate between deciduous and permanent teeth with respect to kinds and number.
Name the different types of teeth and describe the function of each.
What is a bolus?
Early Digestion: The Salivary Glands
7. Name and describe the location of the three pair of salivary glands.
8. What is the function of saliva?
Early Digestion: The Pharynx and Esophagus
9. What is the role of the pharynx and the esophagus?
10. Describe the process by which food moves through the pharynx and esophagus.
11. Describe five diseases of the mouth.
Label the diagrams.
Identify the
different types of
teeth.
Middle
Digestion: The Stomach
12.
13.
14.
15.
What is the stomach opening called? What is its purpose?
What is the mixture called here?
What are the stomach folds called? What do they secrete?
What closes of the stomach from the small intestine?
Middle Digestion: The Liver, Gall Bladder and Pancreas
16.
17.
18.
19.
What are the functions of the liver?
What is the function of the gallbladder?
What is bile?
Why is pancreatic juice so important?
Late Digestion: The Small Intestine
20. What are the three parts of the small intestine?
21. What is the function of villi?
22. What is the function of the duodenum?
Late Digestion: The Large Intestine and Rectum
23. How is fecal material different from chime?
24. Trace the path of the fecal material.
25. What controls the anus?
Label the diagrams using the information from the following site:
http://www.innerbody.com/image/digeov.html
Access the following site to learn about some common diseases of the mouth.
http://www.nlm.nih.gov/medlineplus/mouthdisorders.html
26. Describe each of the following:
a. Cold sores
b. Canker sores
c. Thrush
d. Dry Mouth
e. Gingivitis
f. Periodontitis
Access the following sites to learn about the following digestive system disorders.
http://www.digestivesystemdisorders.com/
http://kidshealth.org/parent/general/body_basics/digestive.html#
27. Describe each of the following:
a. colorectal cancer
b. stomach cancer
c. diarrhea
d. Diverticulitis
e. Gas
f. Heartburn
g. Hepatitis
h. Inflammatory bowel disease
i. Irritable bowel syndrome
j. Lactose intolerance
k. Ulcers
l. Appendicitis
m. Celiac disease
n. Cystic fibrosis
Read the following information on eating disorders.
http://kidshealth.org/parent/emotions/feelings/eating_disorders.html#
28. Identify the three disorders and select one. Write a one page paper on the disorder.
Include causes and warning signs. You may use other sites as well.